In my view, things like ownership and property are not absolutes, but are an evolved set of ad hoc rules and customs. They're maintained because they mostly wor

In my view, things like ownership and property are not absolutes, but are an evolved set of ad hoc rules and customs. They're maintained because they mostly work, except in some cases when imposed by a person in power. Discovery of a loophole, or development of a new technology, might render the old customs obsolete and require new ones to be developed. A lot of "ownership" and pricing systems are attempts to govern the distribution and conservation of public goods and externalities. Charging money for heat or electricity are ways to encourage conservation of things that are ultimately subsidized. Using someone's wi-fi is an interesting case. If I noticed that my neighbor had a water leak, I wouldn't water my lawn with it. I'd tell them about the leak. Likewise, unsecured wi-fi exposes them to a risk of nefarious access to their network, and I'd tell them about it.