I would not build a next-gen social app because young users look bored on the big platforms. Boredom creates experiments. It does not guarantee openings for another general feed with nicer design.
Social apps win on weird wedges
Tight loops that existing apps handle poorly:
- one fandom
- one job workflow
- one local scene
- one creative format
- one private group behavior
Broad "connect everyone" pitches die in onboarding.
The cold start problem is still the boss
Who posts first?
Why do they return tomorrow?
Why do they invite someone who is not already there?
If your answer is "gamification," keep thinking.
Most opportunities are tools, not networks
Communities form around utility: games, commerce, co-working, dating, support, learning.
Sometimes the social layer is the product. Often it is the retention layer on top of something useful.
I would study where people already hack group chats
Discord servers, WhatsApp groups, subreddits, shared spreadsheets.
Build where friction already proves demand.
The next social goldmine is usually a narrow behavior big apps ignore, not a replacement for Instagram with a new font.