https://www.techpowerup.com/255715/u-s-tech-industry-including-google-micros...
As I know now, there are involved at least
- Intel / Qualcomm with LTE / 5G modems - Xilinx with FPGAs - Infineon with power electronics
and many, many others.
The worst case IMHO would be, when there are rising up two branches of technology (one for the Americans in their cheese dome and the other one with Chinese vendors) which are completely incompatible..