What of your mobile traffic would your ISP actually get though? Can you GeoIP a connection from a cellphone? That's probably coarse data at best right? They

What of your mobile traffic would your ISP actually get though? Can you GeoIP a connection from a cellphone? That's probably coarse data at best right? They could probably buy the location data from the mobile carrier, but that's not something they'd get for free. What the user was actually doing on their home VPN be largely opaque to the ISP. They might be able to make educated guesses like "this much traffic over this period of time looks a lot like somebody streaming a movie off their NAS", but that's pretty crude. I'm not sure they could really monetize that sort of data. On the other hand home VPNs being common would probably increase the how much uploading the average user did. These sort of residential connections are almost always asymmetric because ISPs are counting on people downloading far more than they upload. By empowering users with home VPNs, the balance of upload/download might be upset in a way that isn't profitable for the ISP.