To simply those list, its decentralized currency, banks and government can't make a profit from cryptocurrency so they would rather ban and ensure that people would stick to the regular currency which then can regulate. Its nothing new, tons of government bans Cryptocurrency to the point that there are certain countries bans mining as well.
There are some governments that already have regulated Bitcoin and imposed a tax on cryptocurrency earnings. So, saying that governments can't make a profit from them wouldn't be true. Because of this reason, I think regulating Bitcoin is more advantageous for governments rather than banning it.
If this going to happen around the world, we are simply giving up our anonymity. By simply paying tax to the government, we are also giving them the chance to know more about what we do in crypto and how much we are able to get from here.
Because the more we are exposed to them, the more they got the interest to oblige every crypto holder to tell how much they hold and their crypto assets. And this might lead to some tax abuse that will happen in the near future for the corrup leaders and which I worried about for the worse case scenario like being controlled by the government.