At Precursor, Scott Cleland notes that Microsoft is no longer listed as a member of the It's Our Net Coaltion.

Could the organization be getting a little too radical, regulatory, government intrusive, or anti-market-forces for their taste?

Could the folks at Microsoft be worried that if they set a net neutrality fire, there may be no way to control it and they could end up getting burned down with similar net neutrality rules as broadband because they clearly have more market share (90%) of their market than any player?

Could it be that they no longer wanted to associate with rising Googleism?

Of course, it could just be that the computer dropped them accidentally. Those who don't believe in free will have never dealt with computers.