Change is hard; the more successful you are, the more difficult it is.
Cable TV created a world where differentiated content could profit from everyone; that is why it will be hard for Disney to make the choices streaming will force on them.
Larry Ellison has declared that Oracle is a cloud company, but their customer offering seems more suited to the world that was.
P&G is cutting product lines, the plethora of which made far more sense in the retail world than online. More change is coming.