Or people will realize that they can stay in bitcoin and don't need to cash out.
This could be more serious than it seems at first. Brussels is the capital of the EU and the EU already has a pretty bad stance on cryptocurrencies. If Belgium wants to ban it, it could get through to the EU and other countries could be banning it left right and center.
Western countries banning cryptocurrencies could be a huge chain reaction. If one country bans it, the people who use it in that country will then mostly be using it for illegal activities, which would result in other countries thinking the same thing about people finding potential to be anonymous with it and then more and more countries could be treating it negatively. Belgium isn't a big country but this could have worse implications than we would think at first.