
I found Roger Martin's book "Fixing the Game" to descibe interesting case studies and proposals on how to fix the short-term greed problem. Perhaps Instagram's board should read it?
For such simple services, reputation is all there is. Building next photo sharing service is easy (perhaps already free on github?) and competitors are waiting for Instagram's slippage.
This is a poor analogy, because you don't become an owner of a team by betting on point spreads. And the coach wouldn't be maximizing value for the actual owners by worrying about such things.
http://www.forbes.com/sites/stevedenning/2011/11/28/maximizi...
where he explains why maximizing shareholder value is misguided.
