Couldn’t the collective threat that everyone just diasporas mitigate inflation if businesses tried to pull any funny business?
Why does it work for Monaco?
Since the term “rich” is relative, I assume the question is in relation to other nations.
If it’s a capitalist nation, I don’t think it would last long. Low incentive to work, coupled with strong international purchasing power, would allow those who spend to drive down their net worth while those who invest increase it. It wouldn’t take more than a few years to begin a notable separation of classes.