That’s exactly what happens in China. If you have a leasehold to the land, and the government eminent domains you, you get compensation. You can’t fight the eminent domain, but the compensation is usually generous.

No, it’s seen as cloudy and rainy.

It’s easier to immigrate to Japan than the United States. There are lots of work visas and long term residency can be pretty quick with a professional position. Many of the clerks you see in Japan for ordinary jobs are immigrants from South Asia.