Doesn't it seem over the years that there is an abundance of SPs who provide great service when they first start out in the buisness, only to see as time goes on that their attitudes decline and various extras get taken off the table? I've experianced it, and have talked to others who had great sessions with newbies, who now you wouldn't touch with a 10 foot pole. Petra, Holland and Ferrari are a few names that come to mind.
Is it that they become jaded with the easy money, or just tired of the buisness over time? Maybe it's even peer pressure from their co-workers? It's not uncommon to see a fantastic SP become Miss Roboto when she moves to another studio. A lot of Peter's ex girls were famous for that.