I was having a conversation with a friend about this. At some point, the bill is going to come . It's free, or cheap, to use everyone's generators, but the bill will come soon. Just like Spotify, Netflix, Prime, etc. The price they're charging now is just to ensure you get hooked and rely on it before they stay hiking to stay profitable.
That's not to say anything about LLM collapse, or the economic cost of training new models for 10% improvements.