Bitcoin will more then likely won't destroy fiat , Banks and goverments will simply won't let us do that . They will even make their own crypto currencies but It won't be decentralized like Bitcoin because they like to control .
Now if we speak about the price , yes It's going to rise a lot and if we speak about the users then yes It will rise a lot too but "Almost everyone" ? probably not .
yes I agree with friend now i think about that time world is change and bitcoin is almost everyone use probably 2022 but that time bitcoin is very famace and then more marketing for bitcoin more than western union bank