They are struggling with not so much open source, per se, but rather they are no longer the low price solution. In the past Microsoft was the low cost solution and Microsoft was then competing and attacking expensive proprietary systems from below. Now for the first time the tables are turned and it's Microsoft that's being attacked from below by a lower price solution. — Brad Silverberg, former member of the Microsoft executive team

http://www.milestone-group.com/news/04_07/Silverberg.html

Microsoft has finally shown that its bag of tricks is empty. Now is the time for Linux vendors to get their act together and deliver the best possible Linux desktop. - Steven J. Vaughan-Nichols, in eWeek

http://www.eweek.com/article2/0,1759,1640879,00.asp

Without open standards, software freedom is an illusion. Open standards are the foundation for software freedom.

- Larry Rosen

speaking at Open Source, Open Standards, heard live