Risk Analysis vs. Game Ender
I'm not entirely sure I buy your argument. If we were at war, for example, and the enemy was developing a doomsday device, we wouldn't be doing a risk analysis.
Game Ender: Def'n - A game ender is a unit which when built effectively ends the game. This is generally due to the fact that all game enders are so insanely powerful they have no real countermeasures.
source: http://supcom.wikia.com/wiki/Game_ender