Bingo. There's a perverse FOSS obsession that's hurting Nostr. Profit motive works. Bitcoin miners make money, why the hell wouldn't Nostr Relays?

Either directly as a percent of ad revenue.

Or by tokenization. 

Subscriptions don't work on social networks though. So it can't be pay-per-use. 

But relays are the key to the whole thing. Setting up a relay should be as easy as installing an EXE and taking 20 seconds of setup time.