This is the wrong way to look at it. The people in the US that you would want working in semiconductors aren't NEETs. They are at Facebook/Google/Jane Street/Citadel/McKinsey.

If I am a capable person working on delivering node improvements dealing with smaller and smaller challenges as the physics issues become quantum - I will eventually start to ask myself: why am I working on the hardest physics problems in the private sector for 150k/yr, when I can transition to Facebook or Jane Street, work equally (if not less) as hard and make 500k/yr?

The US has plenty of smart people. I'd argue more that the wealth inequality gap makes it _incredibly_ difficult to justify working for less, even in a field you love, when you can make top 1-4% of income doing something else.