Oddly, neither article discusses whether or not open source software plays a role in these stories, but I have no doubt that it does. A big role. Customers realize they have a better alternative. Supported, standards-based open source software is enterprise ready, lower cost, more secure and much easier to procure.
Here is a list of a few proprietary software products, and their open source alternatives. Click on the name of the open source product to visit their site and download for free.
Type Proprietary Open Source
1.) Productivity Suite: Microsoft Office / OpenOffice
2.) Operating System: Windows / OpenSolaris
3.) Database: Oracle / MySQL (community)
4.) Virtualization: Parallels / VirtualBox
5.) Application Server: WebLogic / GlassFish