Whatever the parties (owners, managers, workers) involved collectively agree is fair. Instead of the boss earning five orders of magnitude more than the average

Whatever the parties (owners, managers, workers) involved collectively agree is fair. Instead of the boss earning five orders of magnitude more than the average employee, why not four? But as it stands today, workers don't even get the chance to ask that question. Any hint of organizing is crushed ruthlessly. And if you argue that Musk/Bezos/etc is essential and the company wouldn't exist without him, well, the same applies to the workers in aggregate. That's why owners are paranoid about collective action.