...Which is a fancy way of saying "Yes, you get what you grab". After all, the free market could well dictate that breaking your legs and stealing your shoes is profitable, but that doesn't mean that I deserve to profit from it.
Agreed, and breaking people's legs infringes on other people's rights.
As you are in England, you may not 100% understand this example, but I'm gonna use Peyton Manning, all-star football player for the Indianapolis Colts, to make a point. He makes over 10 million per year for playing football. While I agree this is too much, somebody agreed to pay him that much, therefore, he gets that much (I'm not arguing against all taxation, just progressive taxation.)
Which isn't to say that the free market is necessarily a bad thing in itself. Market socialism is a perfectly viable concept, and, I would argue, the most practical route for any contemporary socialist to take. Equally, a capitalist economy may be planned or partially planned, as in many right-wing authoritarian states, and many non-authoritarian states during times of major warfare.
I'm not sure how market socialism works, or whether you consider yourself a socialist or are just arguing for regulated capitalism (Though they are sometimes the same thing.)
Of course he does, but to suggest that this extends to whatever he is able to squeeze from the business is simplistic. "Earn" does not simply mean "get", or thievery would be a legitimate form of employment. It means to have provided labour matching the returns received, which very few capitalists do. "Every time someone gets a dollar they didn't earn", as the saying goes, "someone else loses one they did."
I agree, however, who decides? I say the public. Obviously, and even I'll agree here, conspiring against the public should be illegal. With that, the market will regulate itself. Obviously, you can't force someone to buy a product, or take from someone else to gain that product, as thievery does.
And you can't do anything about inheritance, your system won't let you. That's why the richest man in Britain is the Duke of Westminster, the latest product of a family who have held a peerage since 1761 and an hereditary title since 1622.
Actually, while I don't support "Taxing inheritances" in the same way you probably would, my system does not forbid it. "Equal opportunity" means you keep what you earn, not necessarily what your parents earn.
I do support the right to spread an inheritance, though I agree with the issues of someone inheriting billions of dollars without working a day in their life.
What I'd support is, not taxing it, but the STATE governments requiring it to be distributed to multiple people. For instance, Bill Gates built Microsoft, Bill Gates earned 60 billion dollars of wealth. With the exception of the 10% that goes to taxes (In my system) he gets to enjoy what he's built and earned for the rest of his life.
AFTER HE DIES, Bill Gates would decide how much goes to each person, but the amount that goes to each person would be limited, thus causing the company to split into multiple companies, making the free market stronger. If he did not distribute it legally, or didn't take the time, the state government would distribute the rest amongst charities in that state.
I can support this the same way I can support mandatory organ donation. When you are alive, you have the maximum level of rights that doesn't interfere with someone else's. Once you are dead, you can no longer care what is done with your property, so its not yours anymore.