Frankly it's taken an extremely long time to convince the powers-that-be at Microsoft that Linux's package management is stellar compared to Windows.
My intent is to completely do away with the [current Windows application] practice of everybody shipping every damn shared library.
Reading some of his responses to the slashdot comments, some interesting tidbits came out. He is planning to use WiX to chain MSI's together to handle dependencies, and Windows SxS to handle multiple versions of libraries.
Will it work? Who knows, it is a massive undertaking. I imagine some open-source community members might have to do some soul searching to figure out if they want to contribute to a project that will make windows better, and presumably make Microsoft more money.