We all knew that dinosaurs ruled the world long back. I am sure they were the top of the food chains. But what brought them down is probably the fact that they did not change much with the changing world. They kept consuming all their resources and there was a time when all their resources were exhausted and they died of hunger.
Its a similar condition for lot of large organization in today’s world. They are ruling the world but unless they change and keep in phase with the world they too will just end-up like the dinosaurs. The dynamics in the world have a lesser periodicity. Its not decades or year for a change to happen but Months and Weeks. Core competency is no more a lifetime thing it got to shift based on the dynamics of the world.