I think the thing I find deeply unfair about the situation is let’s say this arrangement of work is 100% accurate.
The owner did the analysis, took out the loan, set up the machine that the worker works.
At some point that work ends for the owner, the analysis is complete, the loan is paid back. There capitalists work effectively ends and the workers goes on forever and the split stays the same.
There is no point where the owner goes, “well if I had billed the company for my analysis and the initial loan I’d have been paid back 10 times over, time to give more to the worker.”
They get to set up the machine because of the wealth and privilege that is indicated here and then extract forever.
When they die, they can hand that enterprise to their heir, who did nothing. Not one ounce of analysis, not one drop of risk in taking out a loan, and that heir can extract value forever.
And they will get to take $6 of every $10 forever because they had the good fortune of being able to afford the machine and take advantage of a system set up by people that own machines which unsurprisingly has a simple rule, the people that own machines get the money.

"Well, but I own the machines."
"How did you get the machines?"
"Sold products and bought them."
"Wait, you sold products before buying the machine? How did you make those products? That seems like circular reasoning."
"Actually, you're right, I initially took out a loan to buy the machine in the hopes I could sell enough products to pay off the loan."
"That seems like it was a risk."
"It was. But, I spent a lot of time analyzing the market, coming up with estimates of how much people would buy, how much someone who could operate the machine would cost in wages, all that sort of thing."
"That seems like a lot of work."
"It was a fair amount of work."
"Who paid you to do that work?"
"Nobody paid me, I hoped to get paid once I could start selling products."
"So, why didn't your worker start his own business and buy his own machine instead?"
"Ah, well, that's the part that's a bit unfair. See, I could afford to spend the time analyzing the market because my family is rich, and I didn't need to work gruelling 8 hour days. Also, when it came time to take out a loan to buy the machine, the bank was happy to give me the loan because of my family name."
"Ah, and your worker?"
"Great guy, but he has a family to support and no rich parents. He couldn't take the time to analyze the market for a new business because he has to hold down a job. And, even if he could find the time to do that, the bank probably wouldn't give him a loan for a new business because he doesn't have any business history, or assets to use as collateral. Also, he can't really afford to fail."
"Afford to fail?"
"Yes. Like I said, I have rich parents. If my business fails, my dad will rib me about it a bit. But, it's not like I'll be out on the street."
"And your worker?"
"Well, he could certainly try to start a business, but if the business failed he'd be in real trouble. No rich parents, you see. Plus, I have great accountants. If my business fails, they'll use it as an offset for my taxes. Technically, anybody can do that, but good luck figuring out how to do that with TurboTax or something."
"So, really, it's oversimplifying to say that you do nothing, and the worker does everything."
"Yeah, he makes what I tell him to make, but I figure out how much to charge, where to sell it, where to buy the raw materials, basically everything about the business other than operating the machine."
"But, operating the machine is important."
"Of course! It's vitally important. But, you see, I bought a machine that costs a little more but is designed to be extremely easy to use. Because just about anybody can use it, I don't need a worker with special skills. That means I don't have to pay too much in wages."
"So, really, if there's unfairness here it's structural. You come from a rich family, so it's easy for you to start a business. He doesn't, so his only real option is to get a job from someone like you."
"That's right."
"But, it seems like that could all be changed with a few changes to the laws. You pay a bit more in taxes, he pays a bit less, then he can save up and maybe start his own business?"
"Yeah, that might work. But, here's the kicker. He voted for the same guy I did. The other candidate was promising tax reforms, enforcing anti-monopoly laws, etc. But, my guy got everyone scared about trans athletes and brown people crossing the border. My worker's a good guy, but he's super racist. As long as you're going after the brown people, that's what matters to him."
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