If the government had let the banks crash in 2008 the economy would be in a much worse state today and everyone would be a lot poorer. Foreign investors hold a vanishingly tiny fraction of the real estate in America and are not responsible for whatever economic ills you are projecting onto them.

You've chosen to believe a lot of incorrect things in service of your ideological commitments. You should learn to distinguish between things that are actually true and things that you want to be true because it would validate your politics.