"Integration with the existing (proprietary) world and expansion of its open-source offerings is the model for Red Hat expansion. JBoss works just fine with Windows, and it should continue to do so. Red Hat has partnered with Likewise to enable Red Hat Enterprise Linux to be used with Microsoft's Active Directory, and should continue to do so.
"In fact, Red Hat needs to seek more ways to integrate itself into and hence infiltrate the Windows world. Red Hat can't grow like it needs to by demanding that the world beat a path to its open source-only solutions. It needs to give would-be buyers a near-term "and" decision by integrating with customers' existing environments and offering them incremental, open-source alternatives to their existing technology investments. Through things like its RHX program, Red Hat can offer enterprises a way to move to full open-source solutions at their own pace, not Red Hat's."
