When one company buy another is not always good thing.

For example: Garmin buy Navigon.
If you ask Garmin about street pilot for Android they tell you "you have Navigon for android, this is Garmin ".
If i like Navigon interface then i will buy Navigon not Garmin device, but i like Garmin interface

When Garmin buy Navigon they start to port Navigon feature to Garmin device ( 2013 series ),this will be good if all will work ok, but with this Garmin create a lot of new bug to FW.

But the number one fail for Garmin is Garmin express.

If MS will port the whole Windows OS to a smartphones/tables they will fail, becouse nobody will buy it.
Next year MS release win9 and win 10 will be in cloud, so this is The End of MS.