Everyone has rivals. Everyone has people who are interested in selling to them. Everyone has people who are interested in finding out what they do, where they go etc etc. And no one more so than the rich and powerful.
Regardless, I think you're misunderstanding the algorithm. Nodes broadcast their data to other nodes because it stands as unassailable proof an AI performed a difficult computation on human behaviour and earned those coins. So you don't have to have a node in a part of the world you want information about. As long as there's someone there who either likes cryptographic money or wants to know more about the activities of that person beyond where the node tracks them, you're going to get that information one way or another.
People in expensive neighborhoods tend to be less interested in getting $10 than people in less expensive neighborhoods because they already have money, so this thing will predominately target the not-zuckerbergs of the world. If you wanted even coverage, you'd have to compensate for the fact that rich people tend to live near other rich people who are less motivated by the same money than poor people who live near other poor people.
Do rich people have insurance companies, ex-spouses, business partners, rival colleagues, rival corporations, government agencies who'd like to know more about them yet want plausible deniability that an anonymous tracking system affords them? This is what I mean by saying that Game Theory balances everyone out. You have to consider that there is always another party and they're all motivated by their own interests. And I don't mean to be curt with you but I'm pretty sure rich people leave their houses every once in awhile. Don't you?
Regardless, I think you're misunderstanding the algorithm. Nodes broadcast their data to other nodes because it stands as unassailable proof an AI performed a difficult computation on human behaviour and earned those coins. So you don't have to have a node in a part of the world you want information about. As long as there's someone there who either likes cryptographic money or wants to know more about the activities of that person beyond where the node tracks them, you're going to get that information one way or another.