Bezos didn't create that wealth alone. He had help from thousands upon thousands of people. It's impossible to calculate how much of the value of Amazon was actually created by the work Bezos did, how much by other people in the company, and how much was just natural evolution brought about by technological and societal change. Bezos gets billions because he is in a position of power where he gets to take it, not because he created that much value.
But even if Bezos actually creates billions of value on his own, it doesn't mean that he should get those billions. The reward for such high value work should be high enough that Bezos chooses to do it instead of something else, but it doesn't need to be higher than that. In a world where the highest paid position would reward a few million instead of a few billion, I'm sure Bezos and people like him would still gravitate towards that work since it'd still be work with the best rewards.
People who have some revolutionary ideas wouldn't abandon them if the potential highest reward was millions instead of billions. Or do you believe that there are people with good ideas right now that abandon them because they can't earn trillions with the idea? What people expect as a reward for their work is what decides whether they do it or not. If we can lower the expectation, we can get the high value work without creating dangerous levels of power concentration.
But even if Bezos actually creates billions of value on his own, it doesn't mean that he should get those billions. The reward for such high value work should be high enough that Bezos chooses to do it instead of something else, but it doesn't need to be higher than that. In a world where the highest paid position would reward a few million instead of a few billion, I'm sure Bezos and people like him would still gravitate towards that work since it'd still be work with the best rewards.
People who have some revolutionary ideas wouldn't abandon them if the potential highest reward was millions instead of billions. Or do you believe that there are people with good ideas right now that abandon them because they can't earn trillions with the idea? What people expect as a reward for their work is what decides whether they do it or not. If we can lower the expectation, we can get the high value work without creating dangerous levels of power concentration.