For those who watched the movie, I found the ending interesting. I won't spoil it for everyone else, but Bong Joon-ho made his perspective unambiguous: he's not a believer in social mobility in Korea. 6 of the top 10 Forbes list in Korea are self-made; the other 4 inherited their wealth. In contrast, 10 out of top 10 are self-made in the US. There are better metrics to compare social mobility (this one was convenient…
I think social mobility from poverty to middle class is more relevant to most people than mobility from millionaire to billionaire class. According to The Global Social Mobility Report 2020 [1] South Korea has higher level of social mobility than United States. [1] http://www3.weforum.org/docs/Global_Social_Mobility_Report.p...
Many people who are "socially mobile" in a country with compressed income ranges, like Denmark, will be objectively worse off economically (PPP) than many people who are not "socially mobile" in a country with wide income ranges, like the US. Income distributions need to be similar for social mobility comparisons.
Most people readily prefer a "non-socially mobile" increase in income if it is greater in absolute PPP terms than smaller "socially mobile" income increases. In these comparison cases, which are not uncommon, there is literally no benefit to being "socially mobile" in a country with compressed income ranges.