[vilhelm_s]

I do think increasing migration from poor to rich areas is a good idea, although it should probably be scaled up slowly to make sure that there is no unexpected effects that makes the wealth of rich areas suddenly collapse.

I have a different cause though, which I also feel receives too little love: increasing migration between rich areas.

Currently citizens of EU states have the right to move freely inside the EU, subject to them getting a job or having enough independent means to not need state welfare. This is seems like an excellent idea, and surely it could scale up to a larger area than just the EU. For example, how about the EU, the US, Japan, and the rich areas of China [1]. For software developers, being able to conveniently move to the Bay Area would be really welcome.

[1] E.g. Beijing and Shanghai. These already have strict immigration restrictions, so including them in the common area would not expose industrial regions to immigration from agricultural regions.