You are looking at it in a capitalist framing. If you write an app that makes a 2 person job 1, those two people should work half as much because they are twice as productive. But under capitalism, the extra production value goes to the owner instead of the workers
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Most investors have ~10k in shares and have an average salary of < 100k. So the value goes the people..
Not the workers true, but most people who benefit aren't on their private boats