US ISPs already do this in order to inject ads, which is why you have to use 3rd-party DNS servers. Wouldn’t be anything new.

My isp (Verizon) already"conveniently" provides a landing page whenever I typo a web address(or there us some dns miss, etc.)...so your concept is (sadly) here-and-now, and not a far off thing.

AT&T as well. I still need to put aside a Sunday to figure out how to passthrough their fiber modem/router combo and use my own equipment again.

I think I read somewhere that one option is to simply use a different dns provider, but I have not validated this. I, too, need to put aside a day to play with this.

yep, it works.

Follow these steps to make your router the default host: https://www.att.com/support/smallbusiness/article/smb-intern...

And then plug all of your devices into your router. Easy peasy, albeit not as easy as Comcast’s big bridge mode switch on the modem control panel.

I'm pretty sure there's more than one alternative.

I've heard of handshake...but were you referring to something else? If so, please share, I'm genuinely curious.

Personally, I don’t know what the alternatives are. I barely understand DNS as it is.

But I would be surprised if the whole of the tech world can only think of two possible ways of managing it.

I hope you're right about the tech world...Because we need valid options.