People will still find ways to circumvent this ban. In many countries weapons and drugs are prohibited, but they are used. The same will be with bitcoin.
But for bitcoin users it will not be hard to regulate their bitcoins and to transact their money to any other place in the form of bitcoin as bitcoin is unable to detect the ban will fail as it already happened in the future with some countries.
Yes in the past some of the countries had banned it but then they found that banning bitcoin is useless and they are revoking the benefit of their nation so then they start the use of it again in their country and allowed them to use it for any of their need.