Inequality is not a problem in a world where people can choose to work really hard or chill their whole lives and have the hard workers pay for their food stamps.
The main thing is choice, and that will always result in different outcomes. A violinist will probably end up with less money in her life than a stockbroker ends up in his, but money is not the only measure of a life.
On that measure however, with the massive scale that certain companies can achieve, some people will have far more net worth than others. But that won't be because the others had anything taken from them. It'll be because massive value was supplied to some customers, or some value was supplied to millions of customers.