No they don't. Logic says that because they are getting richer it can only mean they extract more wealth over time and not put it back in into society.
They generate wealth. It's a farmer growing corn and selling it stealing from the guy who buys it? He didnt pay the earth to grow it for him. How can he charge him money?
I said the Capitalists (people who hire others to work for them) are the ones that get wealth which they didn't work for. Work(ers) creating useful things is what creates wealth.