Why not V4V? Let the customer set the value that they get, and remind them to send something in return. The reminder is important and also an easy way to send value (built into Nostr thankfully). Happy to support things I like.
Discussion
V4V depends on users. If V4V worked, no one would be thinking about other business models. It could work, but people must actually go for it.
Social media networking is currently undercut by the freemium models of FB and others. Evidently all those who use it don't care and are unlikely to ever see a point in paying in the foreseeable future.