Would btc be liquid ? How would you even send and receive even if you do own the private keys to your coin?
I am aware virtually all other aspects of our lives would be fucked properly more than likely before btc even comes to our mind if this were to happen (unless you were disproportionately invested i.e. majority of your portfolio is crypto). Still It's interesting to consider whether bitcoin really is comparable to gold in this sense - if the world really goes to shit btc aint helping noone. COVID showed us how fragile civilisation is it wouldn't take much...
First of all shutting down internet just to stop btc transaction is not feasible option with government because today all records are maintained online and MNC'S server operate with the help of internet so it would cost billion of dollars just shutting it down for few seconds only and you are talking about permanent ban? Not possible just take the example of Google how much it cost them when server are down or crashed.But still you can make offline transaction and publish it to other nodes and blockchain with internet.
Secondly if you talk about this covid period then you will notice that crypto investments have boost the people to move towards digital and decentralised currency with fiat losing value in inflation.Gold investment is also witnessing some fall as it is investment and btc can be used as direct payment source.But if you talk about dooms day then gold is also not going to save you and it is also prone to physical attack whereas your keys your funds.Who prefer freedom prefer btc.