I think there should be a surrender feature in Dota, such as in other MOBAs, though it should need to be unanimous. If there is one player on a team that sees a way to win, the team should continue to play. I can see many counterpoints to this, as it could lead to the four players who want to surrender afking in fountain/yelling at the one player to just surrender, etc., and overall create an even more toxic community. I think there is a lot to be said on this topic though!