[simon1ltd]

Something I’ve wondered: Since website access is a pull (client initiated) action, can you straight up decline a visitor if you aren’t allowed to track and capitalize on them?

I have run ad supported services in the past, and I could easily see how non-identifiable traffic might actually have less than a zero value to my operation (as in, they’re costing me money to service).

The biggest difference between a spam e-mail and website access is the client is actually making the request, the website isn’t pushing itself on you.

[Rygian]

https://en.wikipedia.org/wiki/HTTP_451

[Nextgrid]

Officially, you can't, though this has yet to be litigated. Some newspapers are taking the gamble and offer either to opt-in to tracking or to pay.