IRC will never die.
It will never die because its minimal implementation is useful.
Windows will die, but only after rotting all the way through.
It will continue to persist for the next few decades not because its minimal definition is useful (there is no minimal definition), but as a consequence of deliberate strategic choices that were highly effective at fostering dependency (not entirely unlike social welfare programs).
Linux will never die.
Its super power is the same as its curse: it is Shoggoth.