Putting a ban on the crypto exchanges will not severely impact the dealings in bitcoin because remember  crypo is  peer to peer without having to use any banks or financial institution what will be affected is the exchange aspect which isn't an un jumpable hurdle.This a decision that is ill advised though because what you will now find is that people will create unofficial markets to deal with the exchange and this practice is what is unsafe will put people's money at risk and might even breed criminality.