Basically in those situations people find new ways to be connected. For example, while satellite dishes are banned in Iran they are pretty common in that if you don't have one you propably know someone who has. Mesh networks are currently being used in Sudan and have been in other countries where government has shut down internet. Usually shutdowns and restrictions don't happen without warning so people have usually started to smuggle in satellite internet devices. But there are two huge issues. One. you need certain level of technological literacy and there is often some financial cost applied. If you asked my mom what is dark web she would look me weirdly. Partially as her English is not great but I have never heard anyone actually using the Finnish version but mainly because she has no idea what it is. Majority of people are somewhat priced out of satellite internet globally. And no one has heard of mesh networks unless they are techies, activists or people who have experienced government severely limiting internet access.

I am always astounded about how big of procentage manage to stay connected. Need really is mother of inventions. But if you put my mom, stepdad or stepmom in these situations, they would have no idea where to start. The rest of my immediate family would figure it out as we are more or less techies.