Im pretty sure there is no ban per se. They just say: "either put your servers in our jurisdiction or gtfo of here", to which Meta and co. voluntarily decide to not enter the market. CCP still advertises as open to foreign companies though
Comparing 3D development to web shows depth of knowledge in this. Are you a frontend web developer ?
After apple broke out with Epic and Unreal is mostly AAA development, Unity is the de-facto standard for smaller indie development and MR development too (even for Quest). Divesting movies is because of profitability issues, otherwise the engine is well suited for 3d effeects and such
The codebase of an LLM is the size of a high school exam project. There is little to no coding in machine learning. That is the sole reason why they are overvalued - any company can write its own in a flash. You only require hardware to train and inference.