Alternatively, same restaurant has some really popular plates, fancy looking things. Owner sees a way to generate revenue, so he sells the plates for $5 and a recurring fee of $1 per month. That's it, nothing else. Why would I want this? What's in it for me?

Why must there be something for you? The thing in it for you is the same as before: the plates. If they're no longer worth it for you, that's fine, but that's the same if the owner had kept the same model but simply raised the prices or reduced the size of portions. I don't see why that's "crap" or "inappropriate".

The only exception I see is people who already bought a plate; I fully agree they should be allowed to keep using it as-is for free, since otherwise that's a breach of an existing agreement. But there's no such agreement between the owner and prospective buyers.

You seem to be taking issue with my word choice, but I stand by that choice. The second scenario is a crappy deal. It's "Crap" for the consumer. I don't know anyone in their right mind who would go for deal number two willingly.