Dan has a great Linux quote over on flutterby
What high-level decision makers should realize is that Linux is already being clandestinely deployed in their server rooms, not for cost reasons, but for functionality reasons. Open Source may actually cost more than proprietary software if you’re customizing it and adding patches back to the code and using it in the spirit that it’s written. But the point is that you can’t save your way to profitability; at some point you have to be able to do things better and quicker and more reliably than your competitors; cheaper just makes you the next KMart.