If there's a list of elite billionaires you'd like bashed on in a piece like this, why limit it to arbitrarily to Murdoch and Koch? Respectfully, your political biases are coming through just as much as the author of this article's.
Yes, lots of other billionaires are individually union-busting, underpaying, colluding against workers in their companies - but the ones above suborn legislation in multiple countries to do it for them.
Charles Koch is one of the great oil magnates and uses his immense wealth to fund, among other evil things, the climate denial movement in politics and the media, especially in the United States.
It's not just these two men, obviously. But they are the real leading figures in the destruction of our society. George Soros isn't even close. Musk and Bezos might be a net positive; I'd at least consider the argument. This isn't just hating the rich. One side is evil and bent on the destruction of our species.