Internet is just a big WAN containing plenty of smaller WANs. There's no central authority who controls it all. Blocking access to certain protocols is impossible as the applications you're mentioning are using the very same protocols, not even China's infamous firewall has successfully blocked any protocol from being used.

Learn the different types of internet infrastructure first: DNS+Domains are partially centralized, get a decentralized domain or build decentralized apps in order to be prepared for the day they start to seize domains quickly. Then there's wifi, never rely of "free" wifi just because it seems convenient, use fiber, wireless, 4G/5G, satellite or build your own WAN's.

It would be easier for them to seize all the gold and guns than seizing everyone's access to the internet. Heck even prisoners in jail manage to connect to the internet through devices they smuggle in.

As for FED coin and crypto ban, that's total BS. They're gonna use social credit/carbon credit in combination with the ID which is also your covid passport. And it's gonna be a dApp because it's cheaper and more reliable than any centralized system. And where do dApps run? that's right, on blockchain.

Not having any crypto at all in your portfolio is basically giving up and accepting slavery. Of course you should have food, water, guns, ammo and survival gear too. We're heading towards a digital tyrrany where the government is gonna rely very much on these systems to oppress the people, least we can do is to secure digital freedom. Best case scenario would be if internet actually went down completely, then we'd be free but I doubt it'll happen. Just look at Soviet, they had a centralized power grid which didn't collapse even tho the government collapsed which is still operational today.