I think many would be at their respective clubs for reasons other than money. Don't recall what club it was but there was a story recently of a bunch of players willing to take pay cuts to keep another player in their side. Thinking it might be Manly but not 100% sure? It's like any employer really. You enjoy the people, the players, the staff, the fans etc. Makes it hard to leave especially if you've been there for many years. Money plays a big part in it all but I don't think it's the sole reason why most guys are at their respective clubs.