Steve Jobs never cared personally much about that, he dropped out from a less know school, worked menial jobs and traveled the world. Wozniak even managed to be expelled from Colorado for hacking the university system. For them, their colleges were not their entire life experience and social life when they founded apple.

It is very different from Brin and Page, that basically catapulted from campus to become billionaires. Their life experience before becoming founders was entirely shaped by Stanford, their identity tied to it. It makes sense that their company reflects this.