Dear MS. Thanks for going open source with dotNet. We will use it on our Linuxes and BSDs, with gratitude and joy. But when it comes to your intention of bringing your non-open-source'ed software to our data centers: we were actually almost finished taking them out, and feel much better that way.
Dude, if there's one thing in abundance in a DC is non-open-source software. Can't imagine many DCs without one of these: Cisco, Juniper, Checkpoint, VMWare, Microsoft, Dell/HP on ILO/DRAC, F5 or Brocade; you effing name it. Your network, your SAN, all your effing data, everything! goes through some non-open-source'ed software stack. Oh yes, and let's not forget about all your NIC drivers for starters.
Some proprietary software vendors are not _that_ bad.