Microsoft has made agreements with 74- hardware makers to pre-install Microsoft software, such as Skype, Outlook, Office, etc., on Android devices.
Clearly, Microsoft has demonstrated to these "partners" that there's money to be had.
Whilst I use some of that software, I am concerned about software bloat, and, importantly, the the way that some of the bundled software cannot easily be uninstalled, hogging resources. These are usually the phone-makers software, and some of google's apps.
By pre-installing Microsoft software and services on Android tablets and phones, our partners are able to increase the value of those devices by delivering the rich productivity experiences customers want. In addition, partners will be able to take advantage of opportunities to realize new revenue streams. Microsoft In Agreement With Android OS Phone Makers for Software Pre-Installs [blogs.microsoft.com]
