There's an important distinction to be made between ETFs and other kinds of custody. The ETFs can be traded inside retirement account and not trigger capital gains. This gives the same feel as back when we fantasized that the government wouldn't want their cut of gains.
The nostr equivalent would be fast free service with lots of engagement. Nostr is bulletproof social media just like self-custody is true wealth sovereignty.
Btw I agree a VC funded custodial nostr is the only way to give the ux normies expect.