[Barrin92]

>More videos on youtube do not beget more videos, and likewise, more viewers do not beget more viewers.

Given the virality and the way video creators interact with their audience and other video creators I don't think that statement is true. Youtube is not just a one-sided tv channel, it's also a community-driven social network which makes the network defensible.

If your favourite content creator is on youtube or twitch (or your audience if you are one) is on the same platform there's a pretty bad collective action problem to get you to move to a less popular platform.

On a ridesharing app, there's no social interaction, you don't care who drives you and every driver can easily drive for every competitor.

My favourite content creation platforms all have unique creators that I would miss, so I can't leave. Every ridesharing app I have ever used is utterly interchangeable. Not even the theoretical benefits from scale like say better service where ever noticeable.