[curtainsforus]

What about the site owner's water supply?

The disagreement here seems to over whether Cloudflare is more like a restaurant, or more like a utility company. Given the ubiquity of DDOS attacks online, (and the fact that KF seemingly can't stay online without DDOS mitigation), I think there's a good argument to be made that DDOS mitigation might be more like a utility.

[MisterBastahrd]

It's far closer to an insurance company than a utility. And either way, utilities aren't common carriers.