Fiat can't be compared with Bitcoin as a result of many good qualities Bitcoin has had over it which so many people who have benefited from it and still benefiting can attest to it...
it's too different when comparing bitcoin with fiat, because the use of the system that is done may be much different, not yet in physical form in between. bitcoin with a system that is renewable and formless and inversely proportional to fiat which is still used for traditional markets in general.
but let them actually be needed to support each other where what fiat can't do is where bitcoin plays an active role and vice versa. with complementary cooperation, it will be used more and more well controlled.