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Wrong, use does not=value
The value of crypto is drecied from speculation much like how some rich people speculate on fiat.
The more useful a crypto is the more value the crypto can sustain its price.
In fact if Visa had it own currency:
http://cryptotimes.org/cryptocurrency/visa-cryptocurrency-might-worth-3-billion-napkin-math/

speculation certainly plays a role, but usage is also a major part in it.

What would the value of a currency be that is in only one hand? Its 0$.
What is the value of a currency that is used as the basis of all financial transaction? Its the global GDP.

This sounds reasonable😊😊

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