Most people don't understand risk and expected value. Let's say we go ahead and report each others' salaries. There's a non-1 chance you would be able to bump up some modest amount and a non-0 chance you'd be let go. The expected value of the move may put you below "doing nothing", not even considering the added stress of being out of a job.

Also, all this idea will create is animosity, jealousy and politics at work. Everyone thinks they're hot shit, the egos in the bay are out of this world.