Some might. Some will simply shift the blame because they refuse to accept that they are in any way responsible for the situation. I had such a thing happen with a neighbour whose internet had been cut off because his machine had been infected and was spewing spam.
He was irate that the ISP didn't protect him from this and felt he was being unfairly penalized, and wouldn't budge no matter how much I tried to explain to him that the computer was his property and he was responsible for maintenance and security. Eventually I told him that the only option was to backup any critical data and completely reformat his hard drive, and that there was nothing else I could do for him.
Every word that came out of his mouth made me less and less sympathetic to him, to the point where I hoped he was never able to access the internet again. People like that are beyond help. The only thing you can do is isolate them so they don't hurt others.