I'm not as optimistic as you.
Hosting video is really expensive. Making video is really expensive. YouTube was losing money for about 15 years despite having a monopoly on online video for most of that time and the best advertising tech in the world. I don't think it's possible to make a free competitor to YouTube.
On the paid side, there's plenty of streaming services that are making money. But you have to be already established in order to get a contract. And since you will typically have to use social media in order to get past that initial barrier, it might as well include YouTube.
However, my guess is that YouTube makes the majority of it's money from larger channels. If the larger channels all join paid streaming services(e.g. Nebula) then gradually that may be able to bring YouTube down.
But this is just culture, right? In the 70s smoking was normal and nobody was bothered by it. Now culture has changed and we see it as disgusting. With a bit of effort and luck, culture will change and driving a car in public will be seen to be just as disgusting as smoking is now.