So I think the biggest question is, what form of entertainment will eventually supplant streaming services? Whatever it is (or will be) will almost certainly be disregarded by most people.
What they find - what they’re designed to find - is more of the same. Which is only “more things I like” in à very, very shortsighted sense.
Unfortunately, I think the best competition to streaming already exists. And it's already owned by a concentrated player.
For example, if indie AI generated content is the next big thing, it probably shows up on YouTube.