Again, multiple issues here, #1 being that OpenAI loses money *per-customer*.
It's not that they have an efficient product that is just too popular - it doesn't scale. As more people sign up, they lose more money because it costs them more money to provide the service to each customer than they make from the customer.
If it was efficient - that wouldn't be the case.
BUT, I also want to jump back to Bitcoin for a second (and I know, I know, AI proponents hate this comparison), BUT..