We have different definitions of rich. It's not just the cost of living. It's also the time and to deal with the governments to allow this, it's having the money to spend the time, it's the job that allows this, it's the time away from family not being catastrophic for someone's wellbeing. Frankly, this is vastly infeasible for 99% of people. I'd easily consider the remaining 1% "rich" in some way