China has so many people that EE and CS are a dime a dozen, thats why they have a competitive market thats low cost. People are in a jungle trying to survive.
[0]: https://youtu.be/ljOoGyCso8s?t=101
The video is (Supposedly) EEs doing customer support roles thus allowing Cheap PCB for hobbyists, the equivalent in the US does not exist.
Side Note: I hear this is also why SASS never really took off in China. Why pay someone else for software when you can get a dozen people to make your own cheaper.