They were initially valued as collectibles (just like gold) and then as a speculative investment. Now that a market exists and there is liquidity, they are val

They were initially valued as collectibles (just like gold) and then as a speculative investment. Now that a market exists and there is liquidity, they are valued for other reasons as well (payment system, black market transactions, hide wealth ... etc). Explain how we get to 0 from here since they will always have an underlying value as a collectible and speculative investment?