I was talking to someone about this at the kit meet (sorry I forget who) Whoever it was, Your prediction was pretty much spot on.
http://biz.yahoo.com/prnews/060508/sfm098.html?.v=45
Tis a sad day even if you didn't like SGI kit, If they weren't so broken as a company then they would be a good example of how a company in the Unix world embraced Open Source rather than being threatened by it.
I don't know how much input SGI has on OpenGL and XFS now..I presume these projects will continue without them should they vanish or be bought up ?
I wish I still had my Indy so I could give it a hug.