I don't think that cryptocurrency has such a big influence. Even if the cryptocurrency really replaces the legal currency one day, the user is still us, so i don't think there will be any change, we need the goverment to fix this problem
Bitcoin is new monetary system. We know that old monetary system depending on central banks to grow economy and central banks always print money to make it happen. With bitcoin system, circulating money more transparant and it will reducing inflation and can avoid from economic crisis