This article was recently published by the Australian PC World magazine. In it they interview Autodesk's Liam Speden about CS-Map and how it will be integrated into OSGeo.
CS-Map currently supports many projections and over 3000 coordinate systems.
It is an interesting read and shows how Autodesk believes that because there are so many coordinate systems out there, Open Source can make their customers benefit from this technology and how the rapid development and implementation that takes place in the Open Source world provides a sound and stable product used by real users.
Take a look at some of the books I've listed on the side bar. They explain Open Source quite well and how innovation can happen elsewhere.