How about adding a second hand option to the game?
For example, you get tired of the game and give/sell
it to another person. So the new owner has the game, but not
the updates or the customer service. So why not add in
an option where if this second hand buyer can get those
aspects of the game if he pays around $1-$5 extra.
Just have a webpage (or even via impulse) where he
must insert the games old cd key, insert his cc# and
$5 later, he has all the games updates and customer service.
The old account however will get suspended.
This would make the game more fluid and would allow the
the game to exist longer then without this option, while also
beiing a self advertisement.
Just an idea (sorry if this was stated before).