I’ve been interested in a desktop AI ad blocker for awhile, but it doesn’t solve the issue of malware being distributed via ad networks, or the performance impact of all that extra js and network traffic.
Run the whole thing in a sandbox and have the AI exfiltrate the content (but not the ads) as a static DOM (no js). Once you know which DOMs go with which URL's you can gossip those peer-to-peer and not bother actually talking to the site at all (although one of us should hit the actual site every now and then, just in case the content changes). Isn't that more or less how cloudflare works?