Been thinking about it a lot, and how would people be able to communicate with each other if the forces of capital (huge telecom conglomerates) just decided to shut down and become dormant? Capitalism has such a stranglehold on society that we'd be absolutely fucked. What about our electrical grids? And to add onto that, you're probably facing the US military in addition to the militaries of all its allies
It really depends on the country and a long list of other factors. Some countries aren't equally developed and so the digital stranglehold is almost nonexistent in some regions.