Sony tried to claim ownership of an encryption key and were justifiably mocked them for trying to own a long number. A number tied to a copy of Windows can be owned/resold in Europe - I don’t know the exact legal justifications but needing the key to actually use the software you paid for probably has something to do with it. Nintendo chooses to encode a key exactly because copyright law prevents people decoding it, otherwise I could use software I paid for how I want and on hardware I choose.

I think user software freedom aught to be a more known concept in society.