Did riot scrap loss prevented?

I remember when they would do small/large live patches and people in game would either dc or hit a massive lag spike resulting in loss prevention. Why can't this system include leavers? There's literally no reason why 4 people should be punished and 5 rewarded and basically being told, "good job, you beat a team with a handicap". The best way I can get the point across is, imagine a lcs game with 2 teams on stage and then the adc just literally stands up and decides he doesnt feel like playing and dips out. Riot would compensate both teams in some way to where they dont feel cheated. Why can't we implement this into ranked due to the amount of leavers/afkers/dc's in lower elo? I know I sound salty but it's just too many games in a row now...lol