But do they mean it?

Microsoft has been making some “We support open source” noise lately, but I wonder how far it will go.  It’s neat to see open source tools acknowledged, but this other OnLAMP post about how open source removes vendor dependence seems to conflict with Mcrosoft’s usual business model.  I would be surprised if Microsoft went so far as to have open source products supplant (instead of complement) their products, like other vendors have done.