Linux users tend to want things for free.That may be true for Domestic Users but it's certainly not true for Commercial Users. Just the bleeding Obvious IBM Blades can be loaded with either Red Hat or SUSE both of which the company Hiring/Leasing that Blade pays for and most business also pays Support that will fix any code problems within 48 Hours. Try getting support like that from Microsoft it's not going to happen.
So loading Office on a Nix Blade and pushing it out like is done on a Terminal Server could be a very profitable Income Stream for Microsoft on a very Stable Platform that they do not have to support. Currently I know that it's a very profitable Income Stream for Industrial Light & Magic with their Computer Generated Video Image Software. They are a very limited sector of the business and are the industry leader in it. Microsoft could make a killing on that type of Hardware being pushed out across the entire company over all the different platforms that the Bring your Own Device/Disaster currently has. You are not limited to one Platform and the Licensing per User can be very expensive depending on the type of CAL that gets used.
Red Hat is not a Free Nix you can not get any current version of Red Hat free at all, they are all Paid For. Sure the Development side of Red Hat, Fedora is free but it's most defiantly not as stable as Red Hat Enterprise and the companies using Red Hat are not going to move to Fedora to save a few $.
Sure the Domestic Users are not overly likely to adopt a Nix Version of Office but then again they are unlikely to adopt a Free Version of Office either, after all why would they want something like that, they are proud of the fact that they are Microsoft Free so personally I can not see many wanting to adopt a Free Nix Version of Office even.
Business on the other hand which is Microsoft's Bread & Butter are a different story. I currently support 3 companies with 6 thousand CPU Blades and while that may not be a large number I'm certain that I'll never see one of those Blades in a Domestic Environment under any circumstances.

Col