The most innovative thing imo is the fact that anyone can use and communicate with DVMs. You have an app that should do X, but don't want to implement X or have resources for X, you let nostr know and hand the task to a DVM. If a task is often used other people might provide the same service in better/cheaper/faster. Or on the other hand you have a cool model/algorithm/service you don't need to make and market an app. Win win.

The coin in vending machine analogy is even nicer when you insert an actual ecash token 🤙