IP would be the predominant hangup. But regardless, the (((US))) gave away all of our technological advantages to the chinks because they had the lowest costs. We would have to extensively rebuild our semiconductor manufacturing capabilities in the US to make up for that, and that takes time. From my understanding you would need a rather large overhaul of the current setups to allow the building of risc and x86 from the same components. But idk, things are changing. Apple is talking about going the risc route and x86 seems to be on its last legs. Who knows what the future holds in that field, and I know some actual engineers working the field and they don’t even know what’s going on.