With this kind of logic we can blame keyboard manufacturers for the illegal things their products wrote.
It's the customers of Beamed doing the illegal activity and not Beamed themselves.
But if you tell UPS someone is using them to send bombs to people, and they don't act on it in the least and even look like they are shielding bomb senders, then it starts being their fault a little bit, doesn't it?
In your scenario Cloudflare is more like a newspaper aggregator which carries all sort filth along with it's normal commentary.
If this was a normal situation one could just decide not to read some filthy newspapers, while letting those who want to read it make that decision for themselves.
But in the Cloudflare scenario all the major relevant normal newspapers decided to publish all their content through Cloudflare and if something objectionable is published along with it, instead of taking your beef to the original publisher, you have to to take it up with Cloudflare who might just forward your details to some very unsavory people without you having a chance to know beforehand.
This is more like a firearms dealer selling a gun to someone after they put their intended usage as “robbing banks” in the ATF form
Yet Meta and Twitter are doing fine, while this has happened.
Water was kinda intentional extreme end. Is there a line? Where is the line? Giving food for someone before they make a murder can give you much bigger jailtime than not giving it, and then just ignoring the knowledge that they are going to make a murder. It is not what you do but the act itself.
An example that makes it more clear: "by that logic it's my fault that i was robbed for leaving the door to my house unlocked."
No, it's the robber's fault you were robbed. The robbery is the illegal part. It is not illegal to leave a door unlocked. Back to your train wreck of an example: it is not illegal to sell keyboards, and it is not illegal to provide water to people. Extortion is illegal. Denial of Service attacks are illegal.
That's where the line is. It is the border between legal and illegal.
They sold services to two customers, one of whom did a crime independent of cloudflare.
If a robber sees Bob buy a bunch of expensive electronics at WalMart, and then buys a crowbar and robs him, is WalMart somehow responsible for the robbery?
Yes, if Walmart somehow knew robber’s intentions, but sold anyway. That is the primary question actually. Was the intent or act known or not.