Redistribution of wealth would require enormous amounts of investment. The only time an elite has accepted this has been during crises, such as in America in the 1930s under Roosevelt.
How do we get democracy at the international level? That's our problem. and it's essentially the same problem people faced in the 18th Century when they tried to get democracy nationally. Now we need it internationally.
Having enough to eat, being able to educate your children, have reasonably stable employment, and being able to live in a society which isn't collapsing around you-all of these things have been generally eroded.