instead of focusing on what may or may not happen with some government that doesn't even concern you, it is better if you start learning more about bitcoin and its mission for decentralization and cutting off the hands of the middlemen who are always intruding in our financial matters and have their hand in our pockets.
then you will slowly realize that the answer to your question doesn't even matter.
OP probably doesn't care one bit because most newbies are fully invested in shitcoins they don't bother to withdraw from exchanges such as Binance. It's not for nothing that Binance holds over $10 billion in user funds.
I do like it that newbies ask questions similar to these because that's what average joes think about when it concerns Bitcoin. How and what if governments start banning it? I noticed this around me as well.
There are various phases people have to go through in order to appreciate what Bitcoin is.
# buying altcoins and realizing they're shit.
# investing in ICO/IEOs and lose a lot of money.
# get trolled by their bank or government.
Maybe I'm missing another phase, but you get the point.