The reason something like GPT didn't come out of e.g. Google is that they had/have stuff similar but were very reticent about making it public -- because of the ethical aspects as well as the sheer resource cost of hosting it to the public -- and also I suspect have naturally internal conflicts about whether it's the right direction to take, etc.
And so something like OpenAI came along where Ilya S etc. got bags of money to go take that approach and scale the crap out of it, and, yeah, they got results. Because they didn't have to be careful, or deal with competing interests.
That's all fine, but it's also no surprise when it all blows up, is it?