By the way I know there are those treaty-trader visas that would have allowed us to open/buy a business in the US for a reasonable amount of money. But as it of

By the way I know there are those treaty-trader visas that would have allowed us to open/buy a business in the US for a reasonable amount of money. But as it offers no way to a greencard, it does not make sense for us. Imagine operating a well-earning business with a couple of employees for about 20 years and then being sent back when one closes/sells it... why would I do that? At least after a defined period of time (3-5 years) a visa like this should lead to permanent residency.