> If you own a company, or a TV station, or a news source, or a large number of shares in a company, your ability to influence the world is very much greater than someone who doesn't.

Taken to the extreme, the logical conclusion here is no one can own a company, therefore one cannot own a part of a company lest they be able to buy up the whole company, and therefore one cannot own property lest they collect it and have more than others (inequality). To your last sentence, what problems are caused by inequality that aren't simply because of envy?