Why does it matter how much the shares of his company are worth? They just represent ownership of a company. It's not like their existence is somehow holding back wealth from the market or from other people. And if he wants to sell the shares to make some cash, then he's going to have to pay taxes on that, which is good for everyone else. And he wouldn't do that unless he planned to spend or invest the cash receives, which is also good for everyone else. I fail to see the harm.

I think one could argue that taxation should be higher, and harder to dodge, and I would agree with that.

But once you start saying that some people shouldn't have more than others to some degree, that's a very slippery slope. Where do you draw the line? Why is it okay for middle class Americans to buy nicer clothes and move into bigger apartments when people are out there starving? If it's not okay for someone to have the net worth of Qatar, why would it be okay for someone to live in an apartment that's worth more than a poor township in South Africa?

At some point we have to accept that inequality exists, and that although almost everyone could do something to minimize it, there's an ethical and practical line that needs to also respect individuality to a large degree, if we want people to feel incentivized to do things, to feel ownership, to maintain autonomy. And where to draw that line is tough to say exactly, but it probably shouldn't be a line, it should probably be smooth, or at least smooth-ish. So I feel like we're just coming back around to progressive taxation. Which we already have.