> Ownership to me is if I spend $300 on a lawn mower, it's mine forever with no future costs associated to it beyond repairs. I can do whatever I want with it, including modifying how it works or smashing it into a thousand pieces. Both of which are true if you buy a lawn mower today.

This in old, tired theoretical argument. Your lawnmower won't have much impact on your neighbor, but there are things you can't do with it: (e.g., modify it to emit poisonous gas, make painfully loud noises, or fling objects at high speed through your neighbor's window).

The answer is simply, you are subject to the law. If that makes you not free and oppressed, then you are not free and oppressed.