I think collaborative consumption companies changing their business to focus on a specific niche or vertical is quite common. Getable (fka Rentcycle) did it. Zaarly did it.<p>I'm head of sales at balancedpayments.com, a payments company that works with online marketplaces, so I interact with dozens of marketplace founders in a given week, and in my opinion the true P2P/collaborative consumption movement is a few years away.<p>[1]