Creamsteak
Explorer
Can it happen? Sure it can. Does it happen enough that a slow release is called for to the point where it makes a difference? Not at all.
No... no... even in context it does very-well happen. I've avoided tons of games because I got interested in them a bit too late and what the game is about to the people playing it around me is too much investment, whether time or money. Releasing modules doesn't increase the total complexity of the game nearly as much as full on splat books did.