"It shouldn't matter how rich the richest people on earth are."
It does. Bezos and Musk can influence Policy. They can influence for their own ends. Also, it depends on HOW they make their money too. Do they create things? or do they buy up everything such as Real Estate and then jack up the price. There's different kinds of "Capitalism". Rent-seeking is the worst kind. Producing goods that people can use is much better.
Why are most people using Windows computers? Is it because it was so much better than other operating systems?
Did Bill Gates make his $Billions because his operating system was so good? or did he use other "techniques?