Perhaps. I think consumers are more willing to pay producers than they have been in the past. I acknowledge that the time is not yet right, but with time, the less appealing youtube is the more likely alternatives will become.

There aren't many ways to organize raising the money required to build a better youtube or reddit. You could kickstart it, but you'd better hope whoever does the dev doesn't sell. Another option would be a large open source ngo funding the development, but you're still talking long timelines to completion.

There definitely is room for a more pro-social social media platform that isn't a clone of something else. Paying for it is another matter.