The real theft is that of the highest class from the working people.
Sounds like you believe in the constant pie theory, meaning that there is only so much wealth available. If one person takes a bigger slice for himself then everyone else gets a smaller piece. But what if someone makes the pie bigger. Yes he still gets a huge part for himself but everyone else also gets more than they had before.
Lets use a really rich guy, Bill Gates, as an example. He made himself extremely rich, but in the process he built a company that makes useful products that most of us use everyday (and some of us even like using them!) In addition his company employs about 15,000 people, last time I checked. So he's also created jobs for lots of people.
Besides that he's a philanthropist and has donated millions of dollars to good causes. Whats so bad about that? Seems to me that everyone is better off.