Kady when 8 people own 50% of all wealth I start to question my own beliefs.
Income inequality is indeed a problem, but finding a government solution to it is going to be a little tough. Bezos gets his money by automating existing distribution channels and routing all that money to himself. Buffet gets his through buying and owning businesses. Gates gets/got his by packaging and marketing several items of software which have been ubiquitous worldwide.
Nobody did anything evil there to amass that wealth. Gates met a need to simplify personal computing and to improve the efficiency of basic business functions (arithmetic, word processing, and presentation). Buffet just bought and sold stock until he made enough money to buy entire companies, and still buys and sells stock. Bezos just realized we were all too lazy to go to the store, and took advantage of our own sloth. :-)