> The startups you are referring almost all lose money on fixed costs, but sell things at per-unit economics which make sense at scale because they are below ma

> The startups you are referring almost all lose money on fixed costs, but sell things at per-unit economics which make sense at scale because they are below marginal cost/COGS. Many startups and new projects operate with effectively zero revenue until critical mass, at which point they start charging. Youtube, Meetup, Reddit, G Suite, facebook, craigslist, twitter, linkedin. The list goes forever. These all started as free services without any meaningful revenue. I don't see any difference between these platforms and Uber, which while not free, is also selling below costs.