It also helps given that those countries don't have extradition treaties with China, so embezzling money in China, sending it abroad with your kid and wife, and then making a last minute escape before you are caught and executed is a good strategy (see naked officials).
The real estate and university thing is more of status symbol than a real exit strategy.
Most wealthy chinese people would not feel comfortable living outside of China due to a lack of language skills, cultural unfamiliarity and a lack of extended family and friends.
Those making the move long term are usually economically motivated and not very old.