I think MS is already so deep in a hole that another player is truly insignificant.
New Mozilla based Firefox OS cell phones ,Hmmm ! Another reason for MS to worry? I just read about it here-> http://opensource.com/life/13/9/mozillla-jason-weathersby-interview and here -> https://blog.mozilla.org/blog/2013/08/12/zte-will-soon-start-sales-of-firefox-os-phones-on-ebay/ . Good to see more Open Source projects in the works....Digger