This one baffles me.
I have seen several videos and pictures of mishaps on the squat during competitions and it seems like injuries could be avoided by using a cage.
How on earth are two dudes spotting supposed to help a lifter who snaps under 1,000+ lb weights? Even four or five dudes, that's just too much weight and it happens very quickly.
It just seems like a no-brainer to use a cage during comps.