It would not happen as big companies in the top 100 where using/joining to use it now like Microsoft because they saw potential on it to be a good digital currency. Unless majority of it will pursue to make it illegal then it will be ban as they can influence the government to do something to it.
Right the development and future of bitcoin have lots to offer in everyone. It opens lot of opportunities in evefy user. It offers services that no one or other companies did before. So i hope it will not be banned in anyway possible. It gives chances to everyone ti be rich just by having patient,focus and strategies in bitcoin world.