Of course any individual human’s wealth isn’t completely earned. Even a guy living by himself stranded on a desert island completely naked was fed, sheltered and educated by his parents as a child. Absent that parental care, every human would die, because human infants are unable to care for themselves.
And so even a guy who gets kicked out of his parent’s house at 18 with the shirt on his back has accumulated over his lifetime a vast store of unearned wealth. 18 years of food and shelter and clothing and public schooling required to bring a person to adulthood is an enormous effort by both parents and society.
And of course, we don’t abandon 18 year old kids naked onto desert islands either. Even a kid who lives in Somalia lives in a functioning community of sorts that’s a lot easier to survive in than a desert island would be. A kid who grows up in America has a much larger store of unearned wealth than a kid who grows up in Somalia.
So a self-made millionaire’s fortune, like Henry Ford’s, required the efforts of millions of people in the past who created the science and engineering and infrastructure and government that allowed Henry Ford to put together his first factory. Henry Ford on his own on a desert island would be lucky to build a grass hut. Henry Ford in a neolithic village would be able to create more. Henry Ford in a medieval manor would be able to do even more. Henry Ford in an orbiting space habitat in 2357 would be able to accomplish even more.
Did the baby born in the space habitat in 2357 earn his place there? Of course not, neither did the baby born in a neolithic village, and neither did the baby whose parents were eaten by sabertooths and who died a few days later after producing nothing except poop and pee and spitup.
So does that mean, since humans don’t create themselves fully formed from the ether, that since no one earns his own life through his own efforts, that everything a person owns, even his own life, was stolen from others? No of course not, because what did those other people do to deserve their lives? Does it mean the hubris of a Randian superhero is misplaced? Yes, because that superhero was fed and sheltered and educated as a child, and lives in a society where his excess labor isn’t stolen by gangs of men on horseback.
We don’t live under the feudal system anymore, and so we aren’t serfs whose excess labor is accumulated by the mafioso who lives in the castle. But we didn’t earn our non-slave status, it was earned for us by people in the past.
So what next? Does this mean that communal ownership is the only sensible response to this information? That since we didn’t earn our lives by our own efforts, everything we accomplish should not belong to us but rather to everyone else? But this doesn’t follow, because even though we didn’t earn living in America in the 21st century, neither did anyone else earn what we produce. If your wealth is unearned, that doesn’t mean someone else earned it and you stole it. If you want to produce of loaf of bread yourself without any help it would be literally impossible, because wheat itself was discovered and developed by nameless farmers over thousands of years. Yes, you could plant wheat seeds and harvest them and grind them and knead them and bake them and produce a loaf of bread. But you haven’t done it all by yourself.
But then, buying a loaf of bread made by a professional baker for a trivial amount of money doesn’t mean that you’ve somehow stolen the equivalent amount of effort that would be required to produce that loaf of bread yourself. The baker’s professional oven wasn’t stolen either, neither was the bakery’s delivery truck, neither were the baker’s shoes or his house. It would take literally years of effort for one person to make from raw materials one pencil that you can buy for a dime at a discount store. You wouldn’t just make the pencil, you’d have to make all the tools needed to make the pencil, and the tools required to make them.
But of course, this accumulation of wealth whereby we can buy a pencil or a loaf of bread for a trivial effort on our part doesn’t mean we’ve stolen that effort. And just because it is certain that many of our ancestors throughout history were murderers and thieves (go back 20 generations and you’ve got 2^20 ancestors) that doesn’t mean you’ve directly benefitted from their murder and thievery. The fact that your great-great-great grandfather was a murderer and survived to produce a child doesn’t mean that you owe your life to murder.
So the end result is that we should all have a little humility, and be glad we were lucky enough to survive childhood diseases and be fed and educated by our parents instead of starving to death in the gutter. Heck, our neighbors adopted a child who was living on the streets in Thailand. Nobody knows what happened to her parents, or how she ended up in Thailand because she’s ethnically south indian, not Thai. She apparently had a sister at one point but no one knows what happened to her sister. It could easily be that her sister is dead, or is a slave somewhere. Does that mean, that since my neighbor’s adopted daughter didn’t earn this adoption into a middle-class American family that she stole that life from someone else? It’s incoherent to say that this girl doesn’t deserve the life she has, that she doesn’t deserve to even be alive just because other kids in her position are now dead or still in that position.