Fintech (as in financial technology), has produced many ideas that seemed to have some sort of potential only for them to die out. Even before the term fintech started being used, many seemingly innovative technologies never caught on or just flopped shortly after their release. One could argue that bitcoin wouldn't go bellow it's current use levels as it's a decentralized currency and the economy it has developed is supposedly robust and organic. However, in a market as free as this one, seeing other alternatives receive more adoption in terms of use isn't something unlikely. And if there's anything that kills a cryptocurrency, it's lack of use.