That sounds like a wild exaggeration. The internet is a fast communication tool but most critical communication tasks can still be performed by telephone, mail, courier etc. All of the physical production and transport infrastructure is still there, people are smart and resourceful and will quickly route around the failed part of the infrastructure, albeit with degraded performance.
You might not hear from your grandmother for a while, but the John Deere company will immediately cough up their root "internet only" master key when the army show up at their door demanding those tractors work for national security.
A company might go bankrupt by way of CRM crash today, when every competitor has a working CRM. If their activity becomes critical for keeping a large part of the population alive, then silly things like investor and management decisions, accounting law, employee freedom to not come into work etc. go out the window. Money is ultimately just a symbolic representation of work and value, in a crisis they can be completely ignored for a limited time.
You might not hear from your grandmother for a while, but the John Deere company will immediately cough up their root "internet only" master key when the army show up at their door demanding those tractors work for national security.
A company might go bankrupt by way of CRM crash today, when every competitor has a working CRM. If their activity becomes critical for keeping a large part of the population alive, then silly things like investor and management decisions, accounting law, employee freedom to not come into work etc. go out the window. Money is ultimately just a symbolic representation of work and value, in a crisis they can be completely ignored for a limited time.