I've played with some "cheap" Terran players who's supposed to be defeated but they flied their base in the edge of the map (accessible only by air units) and wait till the opponent produces a flying unit to destroy their base.
It's annoying but manageable, but what if the other player has no more probe/drone/nexus/hatchery and can't afford to buy flying units anymore? Would both players be stuck until one player quits out of boredom? If that's the case, should Blizzard patch this and the Terran base should auto-destruct if he has no more units since the player is obviously just "trolling"?