You only "own" something so long as you pay taxes (aka rents) for the right to do so, otherwise someone, usually the government, will take it from you. Even if you don't want to play along, you can only be somewhere public for so long until you're loitering and subject to fines (more rents), confiscation (again, more rents), or removal.
The whole system is pretty blatantly anti-competitive [1], detrimental to individuals [2][3], and rotting the system from the inside out [4][5].
1. https://fivethirtyeight.com/features/the-rent-seeking-is-too...
2. http://www.zerohedge.com/news/2017-06-22/us-economy-perverte...
3. https://hackernoon.com/rise-of-the-rent-seeker-how-the-subsc...
4. https://devinhelton.com/2013/04/14/rent-seeking-economy/
5. https://www.bloomberg.com/view/articles/2016-09-13/banks-and...