Google generally dislikes business models that require providing customer support or are hard to replicate at enormous scale. Their biggest consumer facing pro

Google generally dislikes business models that require providing customer support or are hard to replicate at enormous scale. Their biggest consumer facing products, Adwords and Gmail, focus on a single, infinitely repeatable, 0 cost product and have very little support available. There's an upper limit to how profitable a consumer to consumer marketplace can be, as seen by eBay's shift away from c2c and more towards wholesale/business sellers. Seems like a niche/startup player would be ripe to capture some of eBay's market share, as etsy, 1stdibs, etc do, but getting that initial momentum is hard, as is supporting a c2c marketplace's rabble of buyers, sellers and scammers.