I have been on Unix(Mac/Linux) atleast for 8 years. A lot of developers are buying mac books these days. At this point, even non-technical people are buying "expensive" mac books. This directly affects microsoft bottomline. Obviously, microsoft cannot port mac utilities into windows to reduce the exodus of developers from windows. The stop-gap solution would be to run all "gnu core-utils" in windows natively, the most important one being apt-get.
I believe at this point microsoft does not have the critical mass to create an app-store. There is not enough momentum. Only Linux, Android and Apple have successful appstores. If microsoft allows debian package manager, it can bring back a lot of developers back to windows. Still there are many companies that still use windows desktops and laptops.
There is potential to evolve this into a microsoft app-store that is compatible with ubuntu. That would be a win-win for microsoft and may potentially boost sales and slow down the decline of their OS.
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