Reflect on why, in the face of collapsing fiat currencies in history, governments refrained from reverting to the backing of gold rather than allowing them to crumble. It's essentially the same strategic move: securing your fiat currency with hard money before its value hits rock bottom. This option has consistently been available to governments, given the enduring presence of gold throughout millennia.
Discussion
I think economies that struggle are more likely to first dollarize, And after bitcoinize, But economies that outperform the US will practice business as usual and will be the buyers of last resort. The best customers of bitcoin are the offshore hyper capitalist and corporations. Average people are in there too, But the latest bitcoin holders did not buy their bitcoin like you are saying. There was a time where you just went to a website and got bitcoin from the bitcoin fountain. I do think it plays a very important and interesting role in the economy but I think society would be too fucked if a total economic meltdown happened and I think too many people are too reasonable for that to actually happen. Look at countries that live in extreme poverty, or do not rely on currencies for transactions as a primary economic system. I mean like the small islands off the west coast of Africa where people largely live off natural resources. Bitcoin does solve the debt based money problem, But it is not a cure all and is not right for every government or economy.