This kind of thing makes me want to start a small independent ISP that automatically blocks trackers, a la Pi-Hole, unless the customer specifically opts in for them. Though, I’m not sure if there are legal hurdles in the US for doing this.
I was interested in Pi-Hole, but didn't really want to modify my existing DNS setup.
I have a server running BIND that has forwarders set to external DNS and has views setup so I can reach servers within my network with the same DNS names as externally.
I mention this to say that I would consider using my ISP's DNS servers if they were Pi-Hole RPZ enabled. And since you can use any DNS you want I can't see why that would create legal issues.
An ISP won't really cut it these days, since more and more internet use, particularly in developing countries, is mobile. You need to start a small independent mobile carrier.
The legal hurdles are billions of dollars spent by corporate ISP conglomerates that have less morals than you do, and unfortunately that makes it more difficult to compete.
Sure, that would be more cost effective, but less user-friendly. Most people don’t even know what DNS is, and it would be a nightmare walking every single customer through their router’s DHCP settings. Plus, if they cancel their subscription to my DNS, now they have to change it back.
