Are Commercial J2EE Application Servers worth their cost?

If the market is any indication, the answer is a resounding no!  Check out market share research conducted earlier this year and published on Silicon Angle. The two largest commercial application servers Websphere and Weblogic have a whopping 2.17% market share between them. The lion share of the market is going to open source application servers such as Tomcat and JBoss.As an architect and developer, I've always thought open source application servers easier to support. In most organizat...