afk players at anytime in game: why it doesnt exist a loss prevented or remake system ?

Hi! In the last game i just played, one player was afk all game. So we lost obviously. But why it does not exist a system that can detect afk player for a minimum consecutive time like 10 minutes or something like that and when that happen the game should be over. The team with the afk player get something like a loss prevented or a remake. The enemy team can get the win. Anyway i am pretty sure it is really rare that a team with an afk can won that game. It's more a lost of time and just tilt player.