How would that make the field more attractive? If the aforementioned Europeans and Asians left, and Americans moved in afterwards, aren't you essentially implying Americans cannot keep up with them?
Except we're not talking about outsourced work, and not about unqualified work either. Great job misrepresenting and misunderstanding what the issue is about.
The only reason prices are so low is because it's all outsourced. If you want Americans to do the work of the SEA and China, then you're going to pay a lot more for your shit. Those low prices are the only thing that a lot of people rely on their livelihood for.
No, I'm implying that a lot of capable Americans prefer not to work in fields flooded with foreigners. The status attached to working in the field would improve and attract more native candidates.