Oh ISPs are definitely collecting your browsing habits, and selling them to the highest bidder. It's one of the major reasons why I use a vpn.

Well what makes you think the VPN providers are not tracking?

You would have to either self-host your own VPN server somewhere (maybe on a public cloud provider) or if you are truly paranoid, use something like Tor.

They have been subject to warrant requests, and had nothing to turn over. There are only a few vpn providers that I genuinely trust. (Mullvad, airvpn, etc)

Really though, I am not worried about 3 letter agencies performing legitimate law enforcement duties. I am worried about corporations hovering up more data about me than I'd want to reveal, and either using that as a basis to charge me more, or worse, they get hacked, and that data is used by bad actors to target me.

Scan the sites as an unblocked user; collect those data; apply them.

Obviously this would create the need for countermeasures that would hide the behavior after the fact. So; they would simply proxy the connection, remove the ads/tracking for the end user, and pay back to the site as appropriate.

Or, you know, just recommend folks run Adblock (neutered as it is browser side for MOST users).

Yeah that's the problem (and possibly why such a thing didn't exist).

But I kinda see it like TV. Cable providers know what channels and shows people are watching. Obviously web browsing data is more personal and intimate so it's not the same thing, but it's a good starting point for a thought experiment.