I'll admit, it's hard to imagine any of those guys drinking beer from a keg, out of a red cup. I'm not sure that Zuckerberg's lack of media training and fondness for cheap beer at the time was a bad thing. In 2005 a fair chunk of Facebook's users were doing keg stands and drinking beer out of red cups.
Apple, in its early days, was Woz thinking "hey, I can build a cheap computer" and Jobs thinking "hey, I can sell people Woz's computer". I don't know what he would have said if you asked him what was next. I'm sure the Mac wasn't on his mind, and neither was becoming the most valuable company in the world by selling cell phones.