Nah.
Technology doesn't need to be universally adopted to keep having users, and it also doesn't need to be perfect and beat all competitors. Linux in installed on 1.6% of desktop platforms, does it mean that it is dead or dying on said platform?

There's no such thing as intrinsic value, and Bitcoin isn't just store of value or just currency, it has many uses and people around the world are using it according their needs. Preserving value, investing, hedging, medium of exchange, long distance transfers, shadow economy and so on - there are many uses for Bitcoin and they all give Bitcoin subjective value.

Bitcoin can't simply fail like some experimental technologies do, because it has already been successfully launched and worked without any major flaws, so doomsday scenarios are very limited and at this point seems quite unlikely.