I agree with you on this, and while the verbiage "collusion" is an intrinsically criminal one, and is not often applied to those it should be applied to... (I am referring to Governmental, International, Banking, Insurance, Energy sectors among others).
On the poker table, collusion could be even an unconscious act, based on feelings we may have, or things we consider may be inappropriate at the time.
I was faced with such a situation the other day when i called an "all in" against Mr. Hugh... I had J9 suited.
Now, it was early in the game, but it was also part of my strategy to go hard early. I had to shake off the weight of "who" i was against, and go with the feeling... if I had not done that, then I would have been guilty of collusion.
In many "organizations" there is favouritism, and collusion amongst friends... I consider it to be "human".
Is it collusion if you don't play hard against your friends?
How does one attribute a penalty for it...?
If you thought about it, in a poker table sense, how could you make it work for you?
I can think of two ways...
1. when they are both in a hand, drop out and leave them.
2. use the chat tool, and outright accuse them of it...so everyone else will see it...that would reverse the collusion on them.