Unless you own 100% of a company, it isn't really ethical to give yourself a discount or freebies. And wouldn't be legal unless handled correctly with the tax man.

Employee discounts are extremely common.

Elon is not an employee.

Elon is an employee of both Tesla and SpaceX. The discounts conversation was referring to Tesla vehicles.

Really. I get an employee discount at my company. I must own 100% of the company.

You probably didn't arbitrarily give that to yourself. If the company decides to give employees discounts for some reason, like staff retention, that's quite different from just picking up whatever you like from the warehouse and walking home with it.

Nobody is saying he would arbitrarily give something to himself. My statement could be reworded as "even the CEO doesn't get an employee discount."