Should restaurants allow smoking or not? Should schools teach evolution or intelligent design or both? Should insurance companies cover contraception? Should I be able to take off my shoes in your living room?
You might think that that last question doesn't belong with the first three. After all, the first three questions are momentous ones about "public policy." The last one is only about the rules you have for my behavior in your living room—a "private-policy" question. And your answer to that question will depend on how you want to use your property.
..property rights solve the problem. It's your living room and so you get to choose. How your living room gets used is not a public-policy problem.
And here's the kicker. If property rights are respected, none of the other three questions is a public-policy problem either. Consider each in turn.
This is just a small list of the problems that are apparently "public-policy" problems only because the government has chosen to make them so. Private property solves people's problems every day.