I doubt that. 

The only people that need sats from nostr are the relays who have to pay for bandwidth and I'm happy to provided value for value there. I sometimes zap memers but I certainly don't feel obligated to. Content creators and artists are free ply their wares but there is no guarantee of income anywhere as I've seen some horrible art presented here that I would pay 1 sat for.

Does nostr need ad revenue? No.
Sponsors? No.

What else then?