[anexprogrammer]

I use a popular VPN when out and about with the laptop. Even with a UK connection I get Cloudflare captchas probably 75% of the time on VPN.

Not only does it trigger a captcha but a site that does so, if you're browsing a while, usually triggers another in 20-30 minutes. They don;t cookie the browser in any way, so if I happen to be browsing HN and go to 4 or 5 different Cloudflare links I get 4 or 5 captchas. Each with 20-30 minute refresh timeouts ticking.

Mostly these days, unless it's a rare site that's worth the hassle, I close the tab rather than faff ticking boxes identifying road signs.

So from this data point of one, Cloudflare costs sites traffic.