I have written about the general idea of "value for value" before. I think it's just a marketing term for donations, and donations are not new nor revolutionary.

See

nostr:naddr1qqyrqwp4xsmnsvtxqyghwumn8ghj7enfv96x5ctx9e3k7mgzyqalp33lewf5vdq847t6te0wvnags0gs0mu72kz8938tn24wlfze6qcyqqq823cex8903

I've also wrote extensively about DVMs, they're just a bad framework for selling API services, and the economic viability of these must be analyzed on a case-by-case.

In short: it depends.