The Innovator's Dilemma is one good basis for this argument (http://en.wikipedia.org/wiki/The_Innovators_Dilemma http://en.wikipedia.org/wiki/The_Innovators_Dil

The Innovator's Dilemma is one good basis for this argument (http://en.wikipedia.org/wiki/The_Innovators_Dilemma http://en.wikipedia.org/wiki/The_Innovators_Dilemma). I can't do it justice, but in short, senior management can lose focus on long-term trends if there are too many diverse products being maintained. And whether they are savvy managers or not, they are in a position to heavily influence the direction of everyone across the whole company, meaning that the company can quickly lose its ability to see the forest for the trees.