To be pedantic what most people consider ownership is a revocable land lease from the state government which you forfeit if you fail to pay protection money to the gov.
True ownership is non-existent.
Sovereign citizen? On my Hacker News?
...It's more likely than you think !!
You could always seastead!
But yes, you do not truly own anything unless you are a sovereign power.
There are plenty of entities that don't pay property taxes. Charities, religious facilities, some disabled people, spouses of fallen service members.