..All thought I agree about the utilitarian analysis Im not sure I woudl agree it is a common pool problem. I am first of all not sure civ is a common pool resource (Any number of players can play civ without having less civ left for those who are allready using it (unlike fish in the sea)
Civ must be more a public good.
If you look at the acion, that is quitting in itself from a game is actually to stop using the public good that is civ. In this case if u do it got the opposite effect. Les uttility for those who stay.
Civ is therefore a common pool resource in reverse. The less people using it the less uttility for those who stay.
ah I lost myself there..
anyway.. this is just for the lols