That's not about what he did do or did not do. In reality there's no concept of "fair pay" or "just earnings". In fact, Bezos doesn't even matter, personally. What matters is that he owns an asset (Amazon) that appreciated in value. Obviously, his "net worth" is tied to this holding. It appreciated because it provided desirable services.
Now, preventing it can be done in two ways, and only two ways - either limit Amazon's appreciation in value (curb the company), or limit the person's holding in Amazon, meaning that if you started as a founder of a company having 50% of the total shares, your holdings will decline as the company's worth rises. Does this seem reasonable to you?
This isn't thinking far enough outside the tiny box of this specific economic order at this specific point in history. For example, we could have co-ops instead of corps.
The vast majority of businesses fail, and many businesses go through cycles where they make less money than they spend. How can the average person take on the risk of not getting paid for years? One year of non-profitability would be a death sentence for a co-op if people can't get paid and flee.
A corporation allows the average person to get paid while someone else takes on a risk with their money.
Now, preventing it can be done in two ways, and only two ways - either limit Amazon's appreciation in value (curb the company), or limit the person's holding in Amazon, meaning that if you started as a founder of a company having 50% of the total shares, your holdings will decline as the company's worth rises. Does this seem reasonable to you?