Actually the question should be "Why would anyone ever use closed source?". Only if you want to pay huge amounts of money to people working outside of your country for software that gives you only 64% of your needs. Only if you want to employ software developers in other people's countries instead of your own. Only if you (someday) want to have software that you can not maintain, and which eventually becomes useless, forcing you to spend lots of money upgrading your software and hardware. This talk will discuss these issues, including the topics of "The Ten Reasons I do not use Free Software, and the Ten Reasons why those Ten Reasons are False".