Except it's not really attractive to many capable people in their right mind who wouldn't wanna go down that rabbit hole called academia with low salaries, unce

Except it's not really attractive to many capable people in their right mind who wouldn't wanna go down that rabbit hole called academia with low salaries, uncertain future, require you to constantly look for a new job and move around every 2-3 years (typically year-based contracts with 0 guarantees about the next year), and maybe a very small chance of getting a real job at the end that doesn't have an expiration date from day 1 in your mid-40s with mediocre salary comparable to what a junior dev would get in a small IT company. The strain this puts on a family is a whole another dimension of the issue. There is a reason why physics departments are populated with Chinese and Indian researchers: it still beats the opportunities and life awaiting them at home. For people in developed countries? Not so much. BTW, an answer to your question is this brain drain: https://en.wikipedia.org/wiki/Human_capital_flight https://en.wikipedia.org/wiki/Human_capital_flight