Well yeah, that’s always been clear. But you can be the most skilled worker in the world, and still labor over something that absolutely no one wants, and therefore has no value.
No it wasn’t. Or rather, it rarely was like that. Early mechanization was aimed at textiles and agriculture, and it absolutely reduced the total number of people required. There’s a reason the Luddites were unhappy with automated looms. Since the dawn of mechanization of agriculture the number of people required to grow and deliver food has plummeted, and this began happening very early.
Today, an assembly line that might once have had fifty people on it might now have only two or three managing the process.
What Marx really failed to understand was the importance of capital investment and organization, which is what Capitalists bring to the table. In the simplistic labor theory of value, laborers are ‘exploited’ if a good sells for more than the cost of labor and they don’t share in the profit. This ‘excess’ profit, in Marx’s wordview, represents the theft of value from the labor force, since the value of the product solely derives from its labor input.
We know how division of labor can improve productivity - Adam Smith wrote about pin factories in the 1700’s. We also kmow that value is determined by what people want and need, and how products slot into people’s hierarchy of values. What Marx dismissed was the value of discovering what people need through a market system, and the value of concentrated capital in improving the productivity of workers. He also didn’t understand or didn’t address the cost of risk and why people need to be rewarded for taking risks with their capital.
As an individual auto worker, imagine what your labor would be worth if you attempted to design, build, and sell a car yourself. If it were even possible, it’s almost a certainty that you would mke far less than minimum wage doing it. You’d probably starve in the attempt, and if you managed to build a car it would almost certainly suck.
But if you get a job in an auto company, your labor will be magnified by millions of dollars of equipment you didn’t have to pay for, and by the large chain of people and processes that specialize in design, sales, supply-chain procurement, people management, etc. Somebody figured out what cars the public wants, raised the capital to create a company to build them, hired the roght people to carry out specialized tasks and paid them regardless of whether the product would succeed or not, and accepted the risks to their own wealth of getting any of it wrong.
You can make probably a hundred times as much per hour working in that capitalist-created enterprise than you could on your own, and in return the people who provided all the things that magnified your labor take their own cut. No one is being exploited. No labor is being stolen. And if it turns out that the labor output of the company produces something no one wants, no value is created and the capitalist goes broke. You get to keep the money you were paid for your services.
Marx didn’t really get that. Or rather, he chose not to consider it because it conflicted with his core belief that capitalists are exploiters of labor.