Bots instead of 4v5

So we all were in at least 1 match when a player just ragequits or the internet of that player takes a little vacation and the rest of the match is a 4v5, but RITO could make that 5v5 by replacing an AFK player that has been absent for at least 5 minutes with a bot. HotS and CS has that so why not LoL too?
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