@tante Ultimately, this is why I opted for a different stance. Instead of trying to block anything, every page has license text that explicitly states that use with AI software implies they agree the my commercial license for my content, which is $30 million USD. Yes, I'm willing to cash-out. (It's a dual-license, which is normal enough.)

By feeding my content to AI software, they both agree that the pricing is fair and that they're willing to pay.

You have to click a link to hide the license as in a JavaScript-capable browser and you don't see the real text until you do. In a text-mode browser or without Javascript it simply always shows. It prints on every page, but in small print.

It's what the software industry calls a "shrinkwrap license" so it isn't anything particularly new or strange. They read the license and click a button to acknowledge they agree with the license. If they don't agree with the license, they don't click the link and go somewhere else. (It doesn't use cookies or server-side anything.)