Are you absolutely certain about that? Think about it: if for example Linus had released his kernel with a more permissive license, he might not have received as many contributions, and maybe Linux would never have become as great as it is now.
History is littered with cases where a large number of people 'discover' or 'invent' something, and then one of them happens to be credited with it, and goes down in history as "the inventor". But it was bound to happen anyway.
You could say the same of Einstein, or ... even Steve Jobs :)