I empathize with that feeling, but would point out that if they were people, Intel would be getting yearly prostate screenings, Accenture would be retired, and Nintendo would be dead.
Google would be entering puberty, Microsoft and Apple would be bowling buddies, Yahoo would be a college student with a major in a dead language, YC would be the guy everyone wants to be friends, eBay would be a flea market sales person, and Craigslist would be one of those 2-for-1 prostitutes. (:
Oh, for sure. The web still feels so young though, but I suppose there is no reason these companies would not be able to move with technology as it dramatically changes, as the companies you mention have (particularly Nintendo).