Sure, you can block all of these URLS. This means you block jQuery, all other Javascript, all CSS, all images, the user-clickable URLs on the page, etc.
The point was that all URLs get encrypted/replaced at the proxy. If you load the page and block all of them, you get not only a page that doesn't work, you also lose access to all other pages on the site.
This is an extremely rude way to run a website; it completely betrays your contempt for and mistrust of the client. Given that quite a few websites already demonstrate this with their malicious and purposfully-misleading ads, I expect they won't think twice about capturing all URLs with a proxy (or similar technique).
Incidentally, this type of method could be extended very easily to prevent all deep linking. Also note that this isn't theoretical. I saw this done in... 1998/1999. It had problems and was expensive to run on the server, but I suspect Moore's law has easily had enough time to solve that problem.
If both legit and ad urls all look the same, and can only be distinguished by decrypting with a key, then adblockers may be unable to differentiate between the two.
Your can differentiate with a list of object SHA hashes you blacklist based on ad blocker user feedback. You'll still need to fetch the object, but you can dump it before rendering.
Excellent point - you could monitor the ABP database and if the hash appears, modify the content (shifting the value slightly on a single pixel) so the thieves need to block the new one.
I assume by thieves you mean ad networks, because I never agreed to retrieve their content, let alone view it.
Its an arms race, as always. And just as the media industry couldn't beat piracy, ad networks aren't going to beat blockers, even if it means content producers get their content stripped and distributed via other channels.
The point was that all URLs get encrypted/replaced at the proxy. If you load the page and block all of them, you get not only a page that doesn't work, you also lose access to all other pages on the site.
This is an extremely rude way to run a website; it completely betrays your contempt for and mistrust of the client. Given that quite a few websites already demonstrate this with their malicious and purposfully-misleading ads, I expect they won't think twice about capturing all URLs with a proxy (or similar technique).
Incidentally, this type of method could be extended very easily to prevent all deep linking. Also note that this isn't theoretical. I saw this done in... 1998/1999. It had problems and was expensive to run on the server, but I suspect Moore's law has easily had enough time to solve that problem.