I mostly agree with you: ownership should mean total control, so I should have total freedom to do whatever I want with my physical property.
The part where I disagree with you, I nevertheless actually agree in spirit: the DMCA is bullshit. It's bullshit because it prohibits too much. IIRC, it makes tinkering with devices illegal, and that's just ridiculous.
The part where I disagree with you is that I think reasonable copyright laws are good. What if I wrote some songs or something, someone else stole the music, and became rich and famous by claiming my stuff as their original? That's just plain wrong, so I think reasonable copyright has it's place.
Unfortunately, the DMCA is not reasonable copyright.