This is easy to answer -- the nerds are out there, but they don't push themselves into the spotlight. The reason Sam Altman gets more press than Linus Torvalds is because Altman is a media spectacle and Torvalds is a technologist. In terms of importance, Torvalds outranks Altman. In terms of flash, the reverse.

Consider this: present-day historians say Alexsandr Solzhenitsyn was a writer in the time of Leonid Brezhnev. 100 years from now they'll say Brezhnev was a politician in the time of Solzhenitsyn.