Companies seem to disagree that you own something if you buy it.
They are free to disagree with me. I will just break the products until I'm happy with them :)
Nothing is owned with unrestricted rights. I “own” my house but if I don’t do what the HOA says they can sue me. If I don’t pay my property taxes it can get taken away. Ownership is really just a specification of rights. So you’re paying for a set of rights and those can be negotiated.
Statutory law defines what limitations corporations may apply to you. Ergo it's more complicated than an arbitrary restriction.