I'm not in the game industry, so I may be wrong, but there doesn't seem to be any push in the game industry to use open source for common problems. Why should

I'm not in the game industry, so I may be wrong, but there doesn't seem to be any push in the game industry to use open source for common problems. Why should a matchmaking/game browser use proprietary code? Create standards and use off the shelf components for common problems. Whenever I go into the settings menu of a game I wonder how much time has been spent reinventing it.