"All everybody has to do is work and there will be no unemployment" --throwaway323929

Wow, you just solved economics!

Your argument is so incredibly reductive as to be nonsensical. The understanding of the allocation of capital is seemingly below grade school level. Even moreso, your understanding of the business cycle and how it interacts with governments and banks seems to be even more immature.

"manufacturing" didn't "go away", it moved to China so investors could capitalize on lax environmental laws and cheap labor. This engineered trade off of wealth had devastating results to massive parts of the US. On top of that, not every city can become Seattle. There isn't enough 'service economy' to go around and do that, especially as technology tends to concentrate wealth.