Bitcoin is not that powerful yet that it can make banks disappear which are the biggest financial institutions we have and also banks holds support from the Government so Government will never allow bitcoin to replace the banking system.
the government will never let it happen. governments have more power, they would prohibit bitcoin in the legislation and bitcoin will not be able to fight it
For now yes, but I sure there is the possibility of the future will be to adopt a system of bitcoin, regulations and laws can be changed depending on the needs of citizens.