I do. I know what you mean but this rhetoric is ridiculous, I don't think that Apple or any manufacturer is obligated to make their product modifiable.
As far as I am free to do whatever I want with the hardware I purchased, no matter how hard it is to do it, I do own it.
Let me put it this way, I can't put diesel in my petrol car in the sense that it wouldn't work because the manufacturer did not develop their engine to run on any fuel. They also made the refuelling hole in different size. This doesn\t mean that I do not own the car, if I feel so I can modify it to work with the fuel I like. Actually, it's widespread to install kits to make the car work with Propane but if I really want to I can convert it to electric or diesel too.
The same goes with any Apple product. Want to make the hardware do something that is not designed to do or actively prevented doing it? Hack your device. You own it. As long as the police doesn't knock on the door due to me fiddling with Apple made device, I do own it.
Except you don't really own your hardware :(