> No, you don't own the radio waves that pass through your property on licensed spectrum.
Yes I do, and I can put shielding on all the walls to attenuate them. Nobody can do a damn thing about that, other than relocate their transmitter or receiver so that the line of sight doesn't pass through those walls.
> And microwave ovens need to be FCC approved precisely to ensure they don't cause undue interference.
So, logically, since major name brand microwave ovens can completely jam Wi-Fi, doing so must not be considered undue interference.
If a microwave, or other device¹, interferes with radio communications, then operating it is illegal and the FCC will get involved to stop it if someone complains².
You most definitely do not. You may own the equipment that emits or attenuates those waves, but the waves themselves are not owned by anybody. They are in the commons and are regulated by the FCC as such.
If I don't own them, that means someone has the right to knock on my door and ask for a return of the energy that I removed by attenuating the waves as they passed through.
And microwave ovens need to be FCC approved precisely to ensure they don't cause undue interference.