I mean...you're probably right. But there's a little part of me that thinks...they said the same thing about Facebook, that it wouldn't last five years, that it would go the way of MySpace and something else would jump in, but... it's been just a few months shy of 20 years now, and even though it's not the juggernaut it used to be, it's entrenched in a way I never expected.

And then there's, like, GE, which is 130 years old...or Cigna, Remington, Citi, or Chase, which are older. Some others, like AT&T, do a little dance and come back...I dunno. Some companies just have staying power (in the case of Cigna, I think it might be a pact with some unholy abomination). And they're all still dominating or at least leading their respective markets.

Even your example, Yahoo, while certainly not the cultural force it once was, is still around in a slightly different incarnation. Nothing ever really dies, it seems.