Riot, Injecting the game with more snowball mechanics, Non Tournament setting VS Tournament setting
The problem with snowball mechanics is that they are taken in a very different perspective in and out of tournament play where money and fame is on the line
In your typical game setting, most peoples goal is to start snowballing asap and never stop, this is why we see that more games are over before the game timer even sees 10minutes
In a tournament game setting, yes you still want to snowball but there is something that takes priority over even that, and that is Do not let the enemy begin snowballing and prevent every chance they get to do so so this leads to more stalemate situations where both teams are stalling off Baron/dragon ect too scared that it may fall into the enemy hands, they want to win and do not want to make a single mistake that could cost them the game
So we get shorter and shorter normal games, while tournament games stay largely the same length