> In fact, it's a perfectly reasonable thing to do.
Just like my answer to the other comment, there are a ton of "perfectly reasonable" things that one can do, that are still shitty behaviour.
That's like when someone leaves free books for anyone to take, you'd take one but never put another one for other people. You're not breaking any laws or rules. Still shitty. Especially if you have enough money to build a whole freaking library.