(This doesn't justify a lot of the crap that MSFT and other tech corps have done to our industry over the years, but we should give credit where it's due)
Certainly not a bunch of evil people that's for sure.
I was working on Data Visualization at the time.
Then SQL Server decided they wanted data visualization, so they bought the entire team from MSR.
Turned out it was mostly just a way to get headcount. Pretty much everyone left or went off to other projects within six months of the transfer.
I was one of the last ones to stick around in SQL Server but it was totally depressing so I eventually quit.
In retrospect I should have done is to move to a different project in MSR. Oh well.
But MSR was cool!
We can't rely on only backing certainties (i shouldn't need to say this on a vc related site).
science+luck+money+time+tooling = next gen tech.
That could be the reason Microsoft is researching these.
[1] - http://m.phys.org/news/2012-02-crystals-perpetual-motion-mac...
Microsoft hopes to be the starters of a similar revolution for quantum computers as there was for "binary" computers.
Though ianai's reason of tax writeoff is probably also a part of the story. :-)