1) cash has an anti-gambling function inherent to it these days aka inflation. Unfortunately, this affects the investing decisions of millions of people rather

1) cash has an anti-gambling function inherent to it these days aka inflation. Unfortunately, this affects the investing decisions of millions of people rather than a few thousand hopeful & unsophisticated would-be investors in bitcoin et al. 2) cash has a multi-century head start from the entire cryptocurrency milieu, which has barely stepped out of the cradle. 3) Central banks and nations extract Seignorage from fiat currencies which has a recurring history of preying on the population of entire nations to keep incompetent and/or corrupt administrations and their adjacent buddies (the 0,01%) afloat, or in practice in say the USA, major corporate banks that control most of the day to day flows.