Microsoft Advantages?

I'm working on a presentation for school, it's an Operating Systems course, and I'm doing my presentation on Advantages of Microsoft as well as the Advantages for Open-Source software such as Linux, if anyone could please give me some more ideas for Microsoft advantages as well as Linux advantages I'd really appreciate it!

Microsoft Advantages?
Microsoft - compatibility with other popular software, easy access to support, If something goes horrifically wrong with Windows they can be held liable.





Linux - stability, customizability, helps you develop a better understanding of computers in general.





Edit: Make sure to research this properly. Just use these suggestions as a springboard for your own research and ideas. To do otherwise would be unethical and likely to get you a terrible grade. (Yahoo answers is not a good source to cite).
Reply:Microsoft Advantages:





Lots of software available


Most widely used os - least amount of potential sharing issues
Reply:The main advantage is that the majority of the world uses it, so all of the work you do in the OS and Office, etc. can be opened and viewed by anyone you send it to.