There is a huge difference in the amount of bandwidth that can be moved via satellite compared to undersea fiberoptic cable (not to mention differences in latency).<p>If all cables were cut and we went back to satellite we&#x27;d essentially be back to UUCP for worldwide datacomms for the general public.<p>Speaking directly to communications satellites, they likely would not be immune to any conflict that affects underwater cables. US, Russia, and China all are rumored to have anti-satellite weapons and Russia has been steering satellites (spy or ASAT no one seems to know) around commercial telecom satellites