By your reasoning, if I could afford to buy every surviving painting by Van Gogh and Rembrandt and I burned them in a bon fire I wouldn't be taking anything from human culture and nobody should care at all about what I do with my belongings.
Destroying something that is rare or one of a kind and valuable does matter. Doing it so that you can exclusively profit off of charging people for software that regurgitates lossy and error filled versions of what was lost makes it even worse.