There are many millions of people who don't have the problems, that can be solved by mesh networks. They live in countries, where ISPs are not overregulated and

There are many millions of people who don't have the problems, that can be solved by mesh networks. They live in countries, where ISPs are not overregulated and are very competitive, bringing cheap high quality high speed internet to every household. In fact, those ISPs and the whole broadband market there emerged from similar communities of local networks you describe, except they weren't mesh networks, but wired networks. And yet there is no decentralized web there either. Because it's not technology, that's stopping it from happening.