7,5% of all websites...
https://w3techs.com/technologies/details/cn-cloudflare/all/a...
https://w3techs.com/technologies/details/cn-cloudflare/all/a...
Though some of them might not be because of Cloudflare, the ones I spot checked all do appear related. Medium, DigitalOcean, Shopify, CodeShip, Pingdom, and many more. The impact is staggering.