Google runs a very profitable ad network. People who use adblockers don't directly help support their revenue. I have a conspiracy theory that google is making it hard for people running adblock to get through captchas. I want all the code that is used by the captcha to think I'm running a pristine ad displaying browser.

I wonder if recaptcha seeing your ad cookies (and other dark tracking indicators) would be enough to help get through. Like we need a "recaptcha profile" in your browser that would have just enough fingerprint to get you through.

Robots don't watch the ads. Adblock blocks the ads. Google's revenue is mostly ad revenue. I don't think it's coincidence.