...and maybe I'll get to watch Amazon Prime Videos on my Chromecast.

there are competitors though, DTube (I'm affiliated), Vid.me, Vimeo

Vimeo is the only one in that list I've even heard of

There are no meaningful competitors to YouTube in most markets, that includes Vimeo.

Google search has competitors too, none that are large or threatening enough to influence Google's product behavior around search. That's the key when it comes to competition. If a competitor is so small you can safely ignore them, they're a competitor in name only.

The only potential threat to YouTube in the near-term, is Facebook's watch product.

Twitch.

> Vid.me

Unfortunately, simply cloning youtube isn't a competitor without also cloning youtube's bankroll. For a very good explanation of why, see Folding Ideas video essay "VidMe or Why Platforms Aren't Your Friends"[1].

[1] https://www.youtube.com/watch?v=r3snVCRo_bI

Dailymotion

Amazon has its own video service.

I'm sure Amazon will strike back with Twitch

Well, now Amazon has a reason to build a Youtube competitor. I'd be quite happy with more competition, in the hope that it would be possible, one day, to have a both-liberal-and-conservative-friendly platform. But I'm probably dreaming.

Serious question: does Amazon lean right in the way that Youtube/Google leans left? Or do you just think the competition will force both to have a more open platform?

I don't really have an opinion on Amazon's tendancy, and even if it leant less left, it may have other biases. But I'm just discovering with James Damore how much Youtube is currently heavy dominating and how censorship is exercised. Anything that allows other platforms to develop means that people will stop searching only one platform for videos, and that will help when some ideas are controversial.