It's possible. I think things are somewhat different to when twitter /Facebook first emerged tho. There's been a lot of fragmentation into fairly rigid clusters, especially with the growing interest in social moving to less publicly open  private groups.  It's arguably a different scenario to when twitter emerged. There's also social media fatigue (or whatever you want to call it) as a factor now. 

People looking at early twitter probably saw how it could very easily draw people in, how subcultures can start forming and flowing there. Lots more options now. Lots more of a sense of balkanised groups. Or something?

I still think it's possible (and has actually already happened to some extent with Meshtastic, permaculture, siamstr.) it's just perhaps not the same circumstances