No. Shutting off parts of the Internet wouldn't put even a tiny dent in cybercrime. There are, however, circumstances in which it might save people's lives, particularly people who rely on continuously available electricity to live.

What circumstances? I realize I already asked you a similar question earlier in the thread, but I'm not trying to be combative, I promise :).

I see, so the argument is then utility operators can't install ACLs so we need to have the government do it for them?

For patients requiring treaments to stay alive, there are generators at every hospital and ambulances to pick up patients in dire need. Even taking your ludicrous scenario of total US power outage attack at face value...oil will still continue to burn without the internet. :D