It is said that bitcoin will destroy the fiat system but i believe that if this happens the world will change completly because banks and a lot of things will go out of market.
It is possible but it will be depends on the government if they are planning to manipulate cryptocurrency but most of the traders in the market will be really disappointed since will all know that the reason which to use cryptocurrency is because of a very hard life that we live in the industry and if government will manipulate the price of bitcoins for their own interest then it will be just the same life we are living.