The way these work is they're net profitable given all users, so you have to recategorize users in one of two ways:
- a user subsidizing other users
- a user subsidized by other users
I don't know what OP prefers, but given that people are saying "woof, API pricing too expensive", it sounds like the latter.
The problem, of course, is the provider has to find a market where the one sustains the other. Are there enough users who would pay > $200/mo without getting their money's worth in order to subsidize users paying the same rate, but using more than the average? I think the non-existence of a higher-tier plan says there probably isn't, but I don't want to give too much credence to markets, economics, etc.