One big part of the "oh shit, let's go back" plan is that it's usually so much cheaper to set things in your country of origin. Some real estate, some investments and you're set for life for a fraction of what it costs in a more expensive country. Or, alternatively, you can see this as an arbitrage: get income in a high income country, spend it in a low income country. For example, just three of my monthly salaries are larger than the median net worth back home. Think if you wouldn't try to exploit such massive inequality yourself.

Local stocks are also pretty attractive, not nearly as much attention is being paid to them as to the big international names.

Also, I agree with the consensus on the risk level ordering, but it's not just the risk, it's the reward too. High priced securities offer no (or even negative) reward in the optimistic outcome scenario.