People don’t write games in GC languages, so GC language developers don’t optimize for games, so people don’t write games in GC languages. It’s just a vicious cycle. It never breaks because for big projects there is too much financial risk.
Also, because everybody who tries optimizing a GC language for games fails, badly. And, GC language developers know that if they promote their language for games, any game developers (temporarily) taken in will hate them forever, and bad-mouth their language.
Languages not used for anything anyone cares much about don't attract much bad press. There are reasons why games are written the way they are. It is not masochism.
