Uber's situation is exactly the same. OpenAI is offering inference for a bunch of industries at prices that make it more competitive than hiring humans to do the same work.

If the break-even price to actually provide the service wasn't actually economic compared to humans, would there be nearly as much of a market? That's the real question. OpenAI is basically betting that they can live long enough that AI systems get built around them, which creates enough of a lock-in that they still have customers when prices increase by a lot.

I think you underestimate the price by a few orders of magnitude where it makes sense to pay a model instead of a human. If someone earning 200,000 a year gets replaced by paying 500 a day to Anthropic or OpenAI their employer comes out ahead.