First you have to ask what’s the value of fiat currencie, aka “money”, itself.
After that, work your way to the top where the cryptos are establishing themselves.
I’ll leave you 1 thing to consider; is a centralized economic/financing system better than a decentralized one?
I too suggest the works of @arielfavio, which detail all you need to know about crypto-economie and you can just parallel it with the structural economic paradigm we are ATM living in.
cheers
EDIT: It would be delightful if @cassandre has her saying on this topic, since her area of expertise is intrinsic value assets.