Well, if we are going to use the employee metaphor:
If I worked at a company that had brought me up through the ranks, had bunches of ambition and were hiring the management and staff to support their ambitious claims all while insisting I am a vital piece of the plan...I'd be loathe to leave it.
Add in that I might be settled in the region, enjoy my coworkers, and knew that if I performed to my level I'd be paid handsomely and might even get rewarded with a leadership position.
I suppose what I am saying is this: If I were in Andy King's position professionally, it would take a massive raise and a massive promotion to dislodge me from a club that is familiar and that is clearly going places.
It's less about looking at it from a fan's perspective and more from a "what would I do professionally?" perspective.