The fundamental issue is how much they are burning on inference. Not training, their bread and butter. It makes them complete uneconomical as a business. Everything AI would explode financially if people understood how much money they are burning on day to day operations.

https://www.ft.com/content/fce77ba4-6231-4920-9e99-693a6c38e7d5

https://www.wsj.com/tech/ai/big-techs-soaring-profits-have-an-ugly-underside-openais-losses-fe7e3184