I feel it's unfair to include Mattrick in here - he came up as a gamer, making games as a teen and rolling that into his own company so at least he has roots as a developer and I feel a dev/gamer connection but I respect your opinion.
I have my reasons for thinking things changed later on, but they are subjective / personal opinion based on personal experience, so I respect anyone who would disagree and exclude him from a list like this.