Timothy
Why not have a wee think about how there are never any airproxes in IMC?
Do you think that, in a similar fashion to your lack of midair events, that airproxes also never happen? Of course the truth is that IMC airproxes also occur, but are never reported (for a rather obvious reason).
Methinks your premise is badly flawed. Interesting theory tho, maybe best left as such.