Only thing is, if everyone joins a zero hash rate pool, most people would lose money. If 10000 people are all in one pool and we'll just assume they all have 10GH then they ha e divide an earned block of .017 by 10000...theyd lose money.
Possible...but not all can count correctly. ;-)
Beside...most hashrate is from free 10Gh miners with multiple accounts....so it will still destroy the game for all others.