> A hard line between labour and capital seems a bit reductive.

What hard line? The hard line I didn't draw with the "what percent of your money" formulation?

> Net worth is a bad way to think about this, because it makes people think billionaires have billions of dollars in cash ready to be taxed away.

If it's not cash it can't be taxed? I brought up real estate as a counterexample to the entire stable of "it's tooo haaaaard" arguments, and that's the weakest of them. I was expecting something taller, like the liquidity argument. But real estate comfortably refutes them all and you didn't even try to deal with that.

> you're talking about taking their property away from them

The government wouldn't hesitate for a second to take my property when they are taxing me waaay heavier than mega billionaires. Why the fuck should I be the slightest bit sympathetic to the sanctity of their literal entitlement?

Some people put property rights on an altar and treat them as a fundamental principle, but here's the thing: property rights (at their worst) have been used to institute and defend literal slavery. If you want to put them on an altar, if you want to treat them as a fundamental principle rather than a tool to economically link investment with return, I'm going to make you own that and defend it. Do you want to go down that road?

Real estate (or more precisely, the land on which the real estate sits) is a completely unique case due to being a resource in inherently limited supply, and arguments which apply to taxing it do not necessarily apply to any other form of wealth.

> I also have the security of a permanent job, paid by someone else to take risks.

So you believe, if a company is failing (owners took the risk and are failing), your job is secure? How? You do realize they can fire you at any moment. Job security is a myth. You risk taking a job just like a investor betting on a company.

Of course. But you at least got paid for your time. That's all you can hope for. Someone who owns a business might well lose all the money they ever put in. That's the risk.

Owners typically don't run a business. Those that do pay themselves a salary. If they don't run a business they are called "investors". Investors typically understand they can lose all of their investment and are in a position where if they do they are fine. This is not true of most people working. Most people working are living paycheck to paycheck. If they fail they are risking far more than an investor in the sense that their life changes. An investor on the other hand already "lost the money" when they wrote a check, and don't need it to survive.

> Owners typically don't run a business. Those that do pay themselves a salary

But they still risk all their capital as well. If you take a loan and use it to open a restaurant, are you taking more risk than an employee who's paid?

This doesn't seem that complicated.