You think Microsoft is going to sell the patents to it's core development technology to someone else so that they can bankrupt a company using Mono? That's a pretty far fetched scenario.
Considering they funded SCO to try and kill Linux and called open source a cancer, yes, yes I do think that.
Well, and as fun as taking quotes and events out of context is, that really doesn't tell the story.
Point #1 (SCO): Microsoft paid SCO a relatively small sum ($16 million in a year where they made over $10 billion in profits) which they claim was to protect themselves from any legal action. Open Source advocates have always claimed the money (and the later introduction to Baystar which led to more funding) was to destroy Linux but if Microsoft had wanted to do that they could have easily bought out SCO and just asserted the patents themselves.
Point #2 (Linux is a Cancer): Ballmer made this quote in 2001 when referring to the GNU GPL. Put in context it isn't the smoking gun Open Software advocates represent it as. From the Register's article regarding the quote (http://www.theregister.co.uk/2001/06/02/ballmer_linux_is_a_c...)...
Microsoft CEO and incontinent over-stater of facts Steve Ballmer said that "Linux is a cancer that attaches itself in an intellectual property sense to everything it touches," during a commercial spot masquerading as a media interview with the Chicago Sun-Times Friday.
Ballmer was trying to articulate his concern, whether real or imagined, that limited recourse to the GNU GPL requires that all software be made open source.
"The way the license is written, if you use any open-source software, you have to make the rest of your software open source," Ballmer explained to an excessively credulous, un-named Sun-Times reporter who, predictably, neglected to question this bold assertion.
Considering they funded SCO to try and kill Linux and called open source a cancer, yes, yes I do think that.