I think that's a bit unfair, they had barely put a team together by year three. They started from zero employees and had to put together a AAA studio from scratch, and kick off two massive games that had no fixed scope due to the crowdfunding goals. They have 600 employees or something right now, are feature complete on the single player and somewhat fixed scope on the open world. I am not a rabid fanboy, but credit where it is due, 10 years isn't unheard of even from established studios on known scope games, and they have two games plus all the overhead of open development.