That is what I tried to point out to all the red-pilled newbies in this thread posting their conspiracy theory like hot cakes. If the internet would really go down it will be a war like chaos. Portfolios can go to hell, people would need to save their own lives, we have so many devices and systems that are relying on internet.

If you talk about a nationalized internet or intranet then in such countries it can be controlled, but to use bitcoin one needs access to the real internet and not intranet.

What @Ucy said, might be a thing for the future - a currency that relies not completely on internet and electricity but let us see what development we can see in such a project if they really work out something worth using.