Perhaps too simply worded but...
It is consistent with what I've been taught in classrooms and seen in practise.
If there is to be an IT strategy it has to focus on the overall corporate strategy. The challenge some times is in getting the corporate strategy in enough detail to see how IT can support it in real concrete measures.
I took a course called "aligning IT strategy with Corporate strategy" and the most interesting part was, how to create an IT strategy if a corporate strategy doesn't exist. You have to try to infer.
I believe in the happy medium. No IT strategy isn't good, but if there is no corporate strategy, then it may be the way to go. The IT strategy should only attempt to be as far reaching as the corporate one.