The short answer to this question is deceptively simple- keep the strategy as long as it continues to work.
But lets look into this further, and with an example from Disney that I discovered in an article in HBR by Todd Zenger and which I have sued in my teaching at SMU.
I love this diagram from 1947. It shows Walt Disney’s original strategy, and importantly, the linkages between the various elements of Disney’s then business.… Read more