Because mobile operators in the US rule their kingdom. Unless you are willing to kowtow you get nothing. Apple lucked out that Jobs managed to get control from AT&T out of the gate, but they are the exception, not the rule.
Without the mobile operators pushing the platform in their stores, MS won't get any traction. And they aren't going to do that unless MS both fills the phone with bloatware, and makes the changes they demand.
As for their being a gaping hole in their ecosystem? How so? Their focus is on their cloud, they don't need to own the mobile device for their cloud to succeed. I would imagine 90%+ of the fortune 500 have iphones and droids happily grabbing email from office365 all day long.
Without the mobile operators pushing the platform in their stores, MS won't get any traction. And they aren't going to do that unless MS both fills the phone with bloatware, and makes the changes they demand.
As for their being a gaping hole in their ecosystem? How so? Their focus is on their cloud, they don't need to own the mobile device for their cloud to succeed. I would imagine 90%+ of the fortune 500 have iphones and droids happily grabbing email from office365 all day long.