Stock options for the company's own stock are kind of weird because the company can issue its own stock, which puts them in a much different position than someone selling uncovered calls.
An uncovered call is a potentially unbounded liability. If you issued someone options to buy 10,000 shares for $10 each and then the price went up to $1000, you could be on the hook to have to buy $10M in shares and then sell them for $100,000, i.e. you'd take a $9.9M future loss, and the risk of that is a significant liability.
Whereas if you have 10,000 shares and agree to sell them for $10 each and then the the price goes up to $1000 before they pay you, you don't actually owe anyone that extra money, you just failed to make the $9.9M gain you otherwise would have. It's the same as if you'd sold (or issued new) shares for $10 immediately. But we don't generally book "opportunity cost of selling shares for the current market price" as an expense, do we?
