People make weird career choices for the perception of prestige or being able to call themselves part of a team. I got a friend who is an Agricultural Mechanic who works for some local owned companies. A few years ago John Deere built a facility nearby and you'd be surprised how many mechanics, who by all accounts liked their jobs, moved to work for John Deere for less pay, less benefits.

Video games aren't that much different. People will harm their own career goals thinking they can work for a brand name when an unknown company might have a better fit. I'm sure they have valid reasons for making the decisions they do, but from the outside looking in, it just looks like fanboyisms.