Web 2.0 was all about mass participation and being connected all the time. As generations shift, this trend seems to revert itself again, as platforms for mass participation become unpopular and communities and tribes rise.
When I'm looking at people my age, nobody really uses Facebook. Twitter is uninteresting if you're not part of a certain tribe, Instagram is only consisting of ads and Snapchat is dead.
Even on Twitter - the only social network I actively use - I only interact with a niche community of makers, founders and inventors. I'm not interested in being connected with all of the world.
I think many people feel the same way, hence why small communities seem to get created everyday. Whatever tribe you want to belong to, there's a community somewhere out there: Makers, Developers, K-Pop Fans, Stay-at-Home Single Dads, there is something for everyone.
These communities now piggyback off the Web 2.0 structure: Groups on Facebook, WhatsApp Groups, Twitter, Slack Spaces. However, Communities have different needs than mass connection platforms can provide, and there might be different, more ethical ways to make them sustainable, so I believe something new will prevail in this space.
Communities need moderation, protection, preferably selection of their members. The second step is activity, events and engagement and in the end, hopefully a unique culture and mindset. I think there are spaces for products out there to solve each one of them - or possibly for somebody to solve them all at once.