Joost Rietveld

Star Wars Why Ninja's sudden defection to Mixer made Twitch streamers less productive

What happens when a star player leaves the market? In 'normal' markets you'd expect remaining firms to increase their output and sales, but not so much in platform markets. In the latest #PlatformPapers, what happened to Twitch streamers when Ninja left for Mixer? open.substack.com/pub/platform...

Blockbuster Projects Send Waves Hitting All Platforms Successful crowdfunding projects spill over to competing platforms

In the latest #PlatformPapers blog, @anilrdoshi.com discusses work on #blockbuster projects in the #crowdfunding industry. When a platform has a hit, it triggers additional entry. Entry rates are higher on #Indiegogo, but of higher quality on #Kickstarter. platformpapers.substack.com/p/blockbuste...

The Platform Governance Paradox Why industry blockchain platforms struggle with centralization and decentralization

#Blockchain based initiatives (e.g. industry platforms for data sharing) are technologically #decentralized, but often they are owned and exploited by just one or a few companies. Read about this decentralization paradox in the latest #PlatformPapers blog. platformpapers.substack.com/p/the-platfo...

The Impact of Platform Most-Favored Nation Clauses on Seller Competition How platforms benefit when sellers collude on price

Thousands of hotels are bringing a lawsuit against Booking.com. At the heart is Booking's "best price" clause. Such clauses can have myriad anticompetitive effects, seller collusion being one of them. Frank Schlutter explains on the #PlatformPapers blog. platformpapers.substack.com/p/the-impact...

We are hiring at Rotman Strategy in the Fall. Apply here. jobs.utoronto.ca/job/Toronto-...

🚨 Thrilled to share our #AOM2025 symposium w/ @aldona.bsky.social & Yongzhi (Alex) Wang on #competition & #regulation in #platforms.
📅 July 29th | 🕝 1:45PM–3:15PM | 📍 Bella Center
More here 👉 www.linkedin.com/posts/mostaj...

🚨Free data alert!! 🚨 Please share.

Large new dataset of Amazon product reviews, including full text and photos and product characteristics, with individual *reviews labeled as fake reviews*.

I believe this is the first publicly available data of this kind.

github.com/bretthollenb...

Platform Cooperatives Driving Change from the Margins How to make the sharing economy more equitable

Platform cooperatives are trying to make the sharing economy more equitable by competing against incumbents (e.g., Airbnb, Uber) from the margin. Read about how they try to do this in the latest #PlatformPapers blog here: platformpapers.substack.com/p/platform-c...

Mobile Money as a Steppingstone to Financial Inclusion How Digital Multisided Platforms Fill Institutional Voids

Digital platforms can help fill institutional voids. In the latest #PlatformPapers blog Aparajita Agarwal and Valentina Assenova discuss research showing how M-Pesa's #mobilemoney platform acts as a steppingstone to #financialinclusion for the unbanked.

Advertising is an Emergent Property of Successful Platforms Plus a public wager

In the latest PlatformPapers blog, Ken Wilbur and Davide Proserpio discuss why #advertising is an emergent (but understudied) property of successful digital #platforms. A recommended read! platformpapers.substack.com/p/advertisin...

Now in-press at Academy of Management Perspectives: Hypercontinuous Innovation and Demand-Side Learning: Why Digital Platforms Enjoy Longer and More Expansive Market Leadership Positions joint with Melissa Schilling. journals.aom.org/doi/abs/10.5...

Star Entrepreneurs on Digital Platforms Abnormal performance is normal in many platforms.

Abnormal performance is a normal feature of many digital platform. Read about research in the context of #Udemy by Kaushik Gala, Andreas Schwab, and Brandon Mueller in the latest #platformpapers blog. platformpapers.substack.com/p/star-entre...

Rethinking Market Power in the Digital Platform Era Market share isn't everything.

In the latest #PlatformPapers blog, Paul Belleflamme, Eric Toulemonde and Martin Peitz argue that using market shares to proxy market power for digital platforms is complicated for several reasons. They offer insights to regulators, investors and managers.
platformpapers.substack.com/p/rethinking...

Demand Spillovers in Digital Platforms When it comes to adding competitors, can more be merrier?

In the latest #PlatformPapers blog Manav Raj explores the effects of adding competitors in digital platforms. In the context of #Spotify he finds that when a major artist releases an album, related artists see their listenership rise by up to 3% and their overall popularity increase by 1–2%.

Reputation Spillover in Digital Markets When agencies help or hurt creators

New Platform Papers blog: Reputation Spillover in Digital Markets - When Agencies Help or Hurt Creators platformpapers.substack.com/p/reputation...

(PDF) Hypercontinuous Innovation and Demand-Side Learning: Why Digital Platforms Enjoy Longer and More Expansive Market Leadership Positions PDF | Strategy and innovation scholars are increasingly concerned about the market power of successful digital platforms—and so are the authorities... | Find, read and cite all the research you need o...

New paper alert: Hypercontinuous Innovation and Demand-Side Learning: Why Digital Platforms Enjoy Longer and More Expansive Market Leadership Positions - joint with Melissa Schiling and forthcoming in SI on #platformregulation at Academy of Management Perspectives.

Platform Papers 2024 Year in Review It’s that time of the year again. Time to look back and reflect.

The 2024 Platform Papers Year in Review is here! What were the top journals for platform competition research? Which were the top-cited papers and the most-read #PlatformPapers blogs? Read all about it and more by following the link. Happy holidays!🎄🎅 platformpapers.substack.com/p/platform-p...

The Hidden Cost of Platform Diversification When Uber eats its own business, and its competitors’ too

What is the hidden cost of platform diversification? Read all about it in the latest Platform Papers blog, expertly written by David Chung, Maggie Zhou, and Christine Choi.

Network effects in online dating The more the merrier?

When it comes to online dating platforms, is more merrier? ❤️ That's the question Jessica Fong tackles in the latest #platformpapers blog. Drawing from an #experiment conducted on a leading #onlinedating #platform she obtained some interesting findings.
platformpapers.substack.com/p/network-ef...

Regulating Powerful Platforms Unintended effects of imposing fee caps on US food-delivery platforms

We often talk about needing to regulate powerful platforms, but such interventions can have unintended second-order effects. Read the latest #PlatformPapers blog where Allen Li and Gang Wang discuss regulatory interventions on US food-delivery platforms. platformpapers.substack.com/p/regulating...

Smaller slices of a growing pie. How do seller entry and market expansion balance each other out in the context of food delivery platforms? Oren Reshef reports on his excellent research in the latest #platformpapers blog! platformpapers.substack.com/p/smaller-sl...

Tomorrow is D(MA)-Day! The Digital Markets Act, Europe's framework targeted at gatekeeper companies went into effect last year. March 6, is the deadline for gatekeepers to submit their compliance plans. Read about it in the latest PlatformPapers blog. platformpapers.substack.com/p/6-march-is...

Winner takes all? Blockbusters’ effect on competition in platforms Evidence from crowdfunding

How does the entry of blockbusters on a platform affect the other offerings on the platform? In the latest #PlatformPapers blog, Zhiyi Wang and Lusi Yang explore this question in the context of #Kicstarter's #crowdfunding platform. platformpapers.substack.com/p/winner-tak...

Home - Platform Papers This website presents findings from a systematic and interdisciplinary review of the literature on platform competition by Joost Rietveld and Melissa Schilling. Interest in platform competition has gr...

Once a month, I invite scholars to contribute a blogpost based on research included in the #platformpapers references database. You can subscribe to the blog on S*bsta*ck or read it at platformpapers.com. Please share to spread the word about platform competition research!

The blog is based on Carmelo and Juan's excellent paper: Generativity Tension and Value Creation in Platform Ecosystems published in Organization Science.

The Power of Generativity in Platform Systems When does adding many new offerings benefit or hurt a platform ecosystem?

In the latest #platformpapers blog, Carmelo Cennamo
and Juan Santalo discusse the power of #generativity in platform ecosystems. When is it good and when can it be a bad thing? Some great implications offered as well.

Here's a direct link to the submission form for those interested: docs.google.com/forms/d/e/1F...

The organization of the conference is well underway. There will be a PhD dinner kindly sponsored by Annabelle Gawer's
CoDE institute, an industry/policy panel jointly organized with London lawfirm Linklaters, who is also sponsoring a speakers dinner. And, Melissa Schilling will give a keynote!

Hey folks, there's two weeks left to submit your best work on digital platforms to the second EU-DPRN conference at UCL School of Management in London (June 27 & 28)! Please share with your networks. eudprn.com

Platform Papers 2023 Year in Review It’s been yet another record-setting year for platform competition research

The Platform Papers 2023 Year in Review is here!

Read about the state of the literature on platform competition, including the most original empirical context and the Top Ten most cited papers by articles published in 2023. Lots of data! platformpapers.substack.com/p/platform-p...