In light of the tense global situation and hints about the possibility of a nuclear war due to the Russian-Ukrainian war and the indirect confrontation between Russia and NATO, there is a possibility, albeit weak, of such a nuclear war.
If this war occurs, God forbid, the electricity and Internet infrastructure around the world will be affected and may be completely destroyed. There are central Internet servers spread around the world, and if they are destroyed, it may lead to an Internet outage in most countries of the world, and thus a real problem will arise for the Bitcoin network if there is no Spare solutions.
The only problem is that there are currently no solutions tailored for such solutions and it might get nasty for "decentralized networks". If ever there is a time to gain 100% or (51% for most blockchain networks) control of a blockchain network, that might be the time we see these networks face real threats. Now is the best time for possible solutions to start creating those. While it would be interesting to know how it plays out, I think that most blockchains aren't for such technological disaster. This is a problem. Anybody that solves this global-sized problem should make bank and its definitely not Starlink as I have seen others suggested in this thread already.