CloudFlare is definitely large enough to raise concerns about centralization of the Internet. You don't have to be a household name for that (e.g. Akamai isn't

CloudFlare is definitely large enough to raise concerns about centralization of the Internet. You don't have to be a household name for that (e.g. Akamai isn't either). Their site says that their infrastructure "powers nearly 10% of all Internet requests". They aren't a villain, they're an illustration of market forces currently favoring centralization. Like CenturyLink and Comcast, for that matter.