Actually, I think you are confusing things. Rich Belluzzo worked at HP, where he convinced the company to reduce development of PA and HP/UX, favoring Windows and Itanic. He then went to SGI, where he convinced the company to license its IP to Nvidia, support NT on x86 and other stupid ideas. He then went to MSN and it became obvious, at least for me, he was working for Redmond all that time.