These are flawed comparisons, because water and electricity flow from the utility towards the consumer. If water worked like the internet, and the utility was just a "dumb pipe" that would mean you could pee in my drinking water - I would hope they would disconnect you. And you can be sure that if you mess with the power coming to your house they will disconnect you, too.
If we use the example of a distributed water supply, Cloudpipe would be the company that said:
> yeah sure someone shit in the drinking water coming from my pipes, but I'm not going to tell them to stop, nor tell you who did it so you can tell them yourself.