"For the right price, I will make you anything you want."
OK, build me a DVD player, using parts only made in the USA. I'm not holding my breath, believe me.
No problem, I'll have it in 2 years and the price will be $10,000. Or I'll have it in 6 weeks and the price will be $1,000,000.
Hell, I'll deliver it for free.
So, you see my point don't you? It's about price.
There is no profit in making something out of parts made in only a certain place by certain people for a minuscule customer base.
Why would you want such an item?