We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Income mobility in Cuba, Russia, China and North Korea is very slight. Almost everyone is poor and a very few people get very rich or have a lot of privileges. Most rich people stay that way.
Income mobility in the EU is, I think, also very slight. Most people spend their lives in about the same quintile -- moving from a family in, say, the middle quintile, to unemployment at the low end of the middle quintile, to a job higher in the middle quintile, to a pension at the low end of the middle quintile.