Marketplaces & The Curse of the Network Effect-Nir&Far
11 Dec 2025 · 1 min
Nir Eyal narrates a podcast episode about how certain marketplace businesses, despite exhibiting strong network effects, can struggle to monetize because users expect completeness (exhaustive listings). He uses Zvents — an events marketplace that reached ~14 million unique visitors — as a case study: Zvents could not charge organizers without degrading completeness, so sponsored placements failed to capture much value. Eyal contrasts this with Google, which also gives away much value but operates over a vastly larger market, and notes that marketplaces that facilitate transactions (e.g., Odesk, Etsy, Uber) can more easily capture a cut. The core takeaway: network effects alone do not guarantee a viable business model; complete marketplaces must either target very large markets or monetize a large share of the value they create.
Questions this episode answers
Nir Eyal
October 7, 2019
Over 14 million unique visitors.
Chapters
Hi, I'm Nir Eyal and this is the near and Far Podcast. This podcast is about business, behavior and the brain. On this show, I do a few things. I read quick articles I've written about topics shaping your behavior. I interview authors of books I enjoy, and from time to time I devote episodes to answering your questions. If you want to ask me a question, visit the podcast page on itunes, go to Ratings and Reviews and ask me a question. By leaving a review, I promise to read it and possibly include your question in a future episode. So please ask me anything now. Enjoy the episode and for more, you can always Visit me@nearandfar.com.
Marketplaces and the Curse of the Network Effect by Nir Eyal and read by Nir Eyal Ethan Stock lived the Silicon Valley dream. He had recently sold his company to ebay and emanated the tanned skin and relaxed composure you'd expect of someone who just cashed a big corporate check. But as we sat across from one another in a Palo Alto coffee shop, I was surprised by what he said next. He said, mediocrity is worse than failure, you know. For seven years before the acquisition, Stock served as the founding CEO of Zvents, an online guide for local events. Though he was successful by anyone's standards, I could tell he was the guy who, like me, had learned some hard lessons about marketplace businesses. He told me Zvents grew incredibly well. We were the largest events site of its kind, providing local listings in hundreds of markets and attracting over 14 million unique visitors. Zvens had done what so many tech companies dream of doing. They cracked the network effect and built a marketplace business that increased in value with each new user. The more event organizers posted to the site, the more useful the site became to people looking for things to do. Both parties loved the site, and Stock's marketplace business was in the middle, connecting visitors to events they otherwise wouldn't find, he told me. But I learned the network effect isn't everything. In fact, it became a liability, he said. Stock's words confused me. How could being in such an enviable position of creating a valuable marketplace business be a bad thing? He told me. Getting paid was a bitch. And he began to unravel how certain marketplace businesses like zvents can succeed themselves to death. The Expectation of Completeness Marketplace businesses exist to connect two or more parties, typically the buyers and the sellers. Investors love these marketplace businesses because they tend to grow quickly and spawn winner take all companies. A long line of successful Silicon Valley startups have found success providing a place for people to connect and transact. Examples of these kinds of companies include industry titans like eBay and LinkedIn, but also include some of today's web darlings like Uber and Airbnb. Marketplace businesses are great, stock told me, but there is a fatal flaw in some marketplace businesses that can hogtie their ability to make money. The expectation of Completeness Stock explained how Zvens had planned to charge event organizers to list on their site. Once we reached critical mass, and it was clear we were becoming the market leader, we expected event organizers would start paying. Unfortunately, reality fell short of expectations. Like many marketplace businesses, Zvens was catering to users who expected to find a comprehensive list of all local happenings. To keep users coming back, Zvens had to ensure it was displaying everyone's events. An incomplete list would send visitors looking elsewhere. When we asked event organizers to pay up, they said what for? Stock said. But threatening to remove a listing was not possible. Zvents needed them all to keep visitors happy. So Stock's team offered event organizers better ways to reach users like Sponsor Placements, which displayed the listing more prominently on the site. But the attempt to finally get paid largely fell flat. We certainly created value for them. We were sending people to their events. We just couldn't capture very much of that value. I guess it's that old saying, why buy the cow when you can get the milk for free? Just like Google. Google is similar if you think about it, stock told me. The comment surprised me. Given the tremendous success of the search giant juxtaposed with the Zvent story, he told me, they also create much more value than they capture. He was right. When searching on Google, users also have an expectation of completeness. They come to the site to find all relevant results every time. If Google decided to only display listings for paying advertisers, well, we'd all switch to Bing. When considering the collective value of all the clicks on unsponsored links, the company does give away the vast majority of the value it creates. Indeed, Google appears to be giving away the milk for free. The difference is that Google's market is not limited to local happenings, as was the case for zvents. Google's market is much, much bigger. In fact, it's everything. By organizing the world's information, Google skims a proportionally tiny amount of value from a tremendously huge market. The absolute number of people who buy a sponsor placement is large enough to keep the company humming, even though it only monetizes a tiny proportion of the value it creates. Implications the Zvance story should Give pause to marketplace Businesses going after niches the expectation of completeness and the resulting inability to monetize may help explain the challenges faced by companies like Foursquare, Red Beacon and many industry specific job listing sites. One way around the problem of completeness is to facilitate the transaction itself. Companies like Odesk, Etsy and Uber ensure they are in the middle of the money by processing the flow of cash. It's much easier to justify taking a cut when you hold the gold, particularly when doing so adds convenience and security to the transaction. Without the ability to collect a share of each transaction, marketplace businesses serving users who expect completeness face a difficult challenge. Two options remain. Either cater to a very large market a la Google, or monetize a large share of the value created. The network effect just isn't good enough. Here's the gist. Network effects are great, but they don't ensure a viable business model. Though they may prove successful from a growth and engagement perspective, certain marketplace businesses can be very difficult to monetize. Marketplaces where either the buyer or seller expect to choose from an exhaustive listing. So called complete marketplaces typically give up far more value than they are able to capture unless they facilitate the transaction itself. These marketplace businesses often find themselves in a bind. Complete marketplaces must either cater to a very large market a la Google, or position themselves to monetize a large share of the value they create.
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