What do you think?
governments are not going to meet just to ban bitcoin mainly at the current stage. but some countries can put tough rules and even ban bitcoin ( mainly African countries are able to ban bitcoin without any problem). but in general this will not harm bitcoin. The current bitcoin stage does not allow all governments in the world to be banning bitcoin at the same time, because this market has already grown a lot, it is already consolidating itself like other markets and this brings more legitimacy to bitcoin.
Now what will really be a problem will be KYC, no doubt that it will be something that all governments are implementing and will be strict in inspections, bitcoin laws may also be tough in the future
Will governments (especially the US government) ban Bitcoin like they did with Gold? Or is it too late to do something about it?
they don’t need to ban because they can implement more rigorous KYC, so this idea of banning is something that doesn’t make much sense in the current scenario
Will Bitcoin survive if all governments unanimously agree to ban its usage worldwide? Your input will be greatly appreciated. Thank you very much. 
definitely could survive but at a very low price and without a lot of volume, probably over the years would die