&gt;Yes. This is exactly why we don&#x27;t expect markets to take care of these issues: instead, we have a public police force.<p>Markets can and do take care of these problems. Businesses employ loss prevention and security staff, install security cameras and do a myriad of other things to prevent these problems from happening. Furthermore, when preventative measures are not enough, insurance is also available.<p>Police officers do very little to prevent these kind of problems. I would guess that very few cases (percentage wise) of shoplifting or vandalism were actually prevented by an on duty police officer. In almost all crimes on property or person police only show up afterwards--if they show up at all.<p>&gt;The problem is that enforcing this liability is somewhere between impractical and impossible. It doesn&#x27;t matter how much ideological sense your proposed solution makes if it can&#x27;t actually be executed.<p>Maybe so, depends on the case. If I have video footage of a neighbor dumping a plastic bag in my front yard, I can pursue it if I want. Perhaps the wind blew it into my tree from a careless person many miles away. If I wanted to, I could hire an expert to do forensics on the bag and track down the culprit. In reality when the cost is so low for me to go pick up the bag from my property, that&#x27;s what I&#x27;ll do. The point is, it&#x27;s up to the property owner to determine how they want to handle a trespass on their property. It is a cost&#x2F;benefit analysis and the markets are working just the way they should.