Cloudflare, being the Internet security company that it is, I believe, should roll out its own captcha or equivalent solution, even if only for the traffic it fronts. They kind of have got all the tools in the bag to make a splash with such an offering.
I also find it unlikely that they move away from Google's recaptcha since they seem to have an unlimited, unrestricted (can be used for any domain) recaptcha API key that they heavily rely on for the "captcha" challenge website owners like to use.
Really, they're worse. If Cloudflare decides you should not be, you're not allowed to use the internet at all. The last thing we need is to give them even more power.
The real purpose of it is to get free human labour classifying images their ML can’t handle. Why are there so many asking you to find squares with cars, or pedestrian crossings do you think?
This one's scary from an infrastructure perspective. Way too many websites depend on Recaptcha, and an outage would be somewhat painful. There aren't tons of competitors, so with Google's penchant for killing services, it puts things at risk.