I think it's just too easy for us. And, also, if I just want to make violent games or fun games... It's not to say that fun games are bad, but I could just go to work for Blizzard, or go to work for Maxis. And they make fun games, they make creative games. I could get a lot higher pay, and a much more stable job. Why not?
Why would I start a company just to make the same kind of game which I can get a much better life in another company? You know, the reason we started this company is because nobody is making this kind of game, and to expand that emotional spectrum of video games — having more people be able to enjoy video games. The only way to do it is to just do it yourself.
The interview touches on a lot of issues — from Sony to Passage to Spore — and worth a read through.