I really wish APIs were as just having a free tier that you can just use, and if you want more, just POST $10 worth of Solana to some endpoint and the API gives your IP 10000 more requests. No accounts, no keys, just simple.
I'm not a cryptocurrency fanatic but making APIs easier to access is one really good use case for it. It makes paying for an API as easy as paying for a lemonade at a street stand with cash. No accounts, no billing addresses, no subscriptions, just POST over a nickel along with your API request and get a response, and API owner gets paid.