No, I mean just Google.
Apple in my mind = present an OS GUI according to the needs of the human brain. A lot more than 6 people were/are/will be interested in that.
Microsoft = make big business computer functions possible on the home computer (at least originally). Apparently more than 6 people were interested in that.
Yahoo's proposition originally = the world wibe web is taking off exponentially and you need some sort of list or something to keep track of all the interesting stuff that keeps popping up.
Again, more than 6 people were/are interested in that.
So, only Google. And truth be said, even Google doesn't count that much since from my understanding Google was just living off of angel/VC funding for a few years until a biz-dev V.P. came up with the idea to tie search results to paid advertising as text on the side.
Without what became adwords, Google would have just stayed an interesting technical solution.
Had that V.P. kept his mouth shut and left, secured VC backing based on his cred as an exec in a KP/Seq-backed venture and started his own search engine based on his adwords idea, I suspect he'd be the billionaire and "google" would have turned out to be a startup his subesquent company bought and absorbed.