It’s not about making money, not only at least. The other reason why the US, China and other countries are obsessed with AI, LLM, NN, ML is because it may prove decisive for their militaries.
What is thought by most militaries today is that we are at a turning point of sorts and the next generation of weapons will be powered by AI in some capacity, and the more we go on, the more AI will be involved (target acquisition, reaction, drone and missile guidance, APS, AA, etc)