That's like saying that you never own your car because you have to put fuel in it for it to run, or need to have it registered / tested, or you need a licence t

That's like saying that you never own your car because you have to put fuel in it for it to run, or need to have it registered / tested, or you need a licence to be able to operate it. If you redefine "own" to mean whatever suits you, yes, you're right.