I understand. However, what I'm saying is that even if that capability exists, in practice it doesn't matter, as it is something that we will never act on becauae we've already been taken over.
That outage example shows that people will immediately act to restore, preserve and expand the system, never destroy it.
This is a rather spurious assumption, that you have there.
'The system' that you're referring to in most likelyhood is just an aspect of science fiction, as such there is no provable threat from the internet, and it doesn't make any kind of capitalistic sense to turn off the infrastructure upon which rests, for example, the stock market, the banking infrastructure, a small portion of the communications infrastructure.
Now, if there were a provable, tangible threat to these systems remaining, and it was seen to likely be a GH-0 'Dead Greenhouse' scenario[0], then I think it would push people to take action.
But I don't think you can claim that "people will never turn off the internet, ever", simply because as-such they have never done it. With that line of logic the USSR would never have got humanity to space[1].
That outage example shows that people will immediately act to restore, preserve and expand the system, never destroy it.