I think the reason this process was used is because if you are some random employee at Microsoft, you don't have the ability to just acquire a company. You probably don't even know who to look for to ask for such a thing. But what you can do is create a req for a position and refer someone you know for it.
I am guessing that the average "higher up" at Microsoft does not know what AppGet is, or even what the priorities for package management in Windows are. It's just not a high level strategy thing, it's a low level engineering thing.