I definitely think there's room to invent some other social websites like Lemmy; things that can A) Monetize themselves in some way other than ads, B) Formulate the way users use them so that they're resistant to bots, C) Promote well-thought discussion points instead of just regurgitation.

I'm seriously considering something like say, a site that requires users to record a short webcam video introducing themselves before they can post. Obviously, that wouldn't be a good venue for anyone very privacy-focused, but perhaps you get the idea.