I think Youtubers and their Patreon communities are probably the closest thing I can see right now.

For just about any niche there is a youtuber(s) creating content and building a loyal community. I mainly see it in entertainment - "Come to my comedy show" or "Come to my tribe-exclusive album listening party" "buy and wear the merch" etc.

But I see this evolving into - Full fledged academies(think Saifedean online academy), members only Job boards(Bitcoiner Jobs?), and even members only housing(kind of like when people reserve a block of hotel rooms for an event to get a better price for guests, who's to say that can't be done for like a whole floor or building at an apartment complex and you have the option of living with other people in the tribe)

Over time it will just be normalized as the quality of the experience outcompetes the status quo.