I’m apparently pretty bad at League of Legends, including the basic requirement of being able to field a 5-player team. I had 4 games in a row that went 4-on-5 for at least half the game. The funny thing is, in my entire time playing LoL, I can remember only a few times when the leaving player was on the other team. That is probably attentional or confirmation bias, and I know that randomness is scheduled to balance out over the course of 400 hours, but you lose the enthusiasm for those 400 hours after repeatedly losing due to perverse randomization in team composition.
I’m not suggesting that there is anything odd going on with a random number generator or anything like that. We should expect to see streaks in coin flips. And, given coin flips, there is no reason to expect the next series to be anything other than distributed according to binomial probability. But players can hit gambler’s ruin, get frustrated, and quit, which is a problem for the developers if this drives away paying customers. This is why many games have anti-frustration features like CoX’s streakbreaker that will force a hit after a sufficiently long string of misses.
No, I have no idea how to make that work (fairly) in a team PvP game where the problem is defecting teammates.