Ummm, they’re not. Stop loading the questions.
If you are renting property owned by another, the other party simply charges you rent sufficient to cover his costs, which presumably include providing for the common defense.
If you live alone, nothing forces you to purchase this sort of insurance other than the contracts to which you’ve already been bound, e.g., your mortgage will simply build into its costs, the price of such a policy, much like they now do (for many people) with homeowner’s insurance.
You’re more than welcome to not purchase this insurance, just don’t come to me asking for a loan. Don’t try renting an office space in my building.
There’s no force, you’re free to do whatever you want.
The other concealed premise in this question, is the assumption that stateless “communities” would, like their Government counterparts, rely on a geographical monopoly. But in theory, State Farm (e.g.,) doesn’t require a geographic monopoly to insure against economic loss. Your health insurance provider doesn’t require such a monopoly, nor your renter’s insurance, your auto insurance, your valuables, umbrella coverage, etc.
You’re also overlooking, intentionally or not, what is a community, which is a loose (some moreso than others) association of people who presumably like one another. My neighbor and I may very well use different “insurance” companies in a Stateless society, but that doesn’t mean that I won’t help him out if, when he’s on vacation, I see someone suspicious sneaking around his backyard, and vice versa. We’re so conditioned now to the absence of community, that most of the time, we forget what it really means.