The Windows Store seems to be shaping up surprisingly well.
If we gloss over the claims that a Windows Store is a "natural" decision for Microsoft, and move swiftly to the feature set and revenue details, Microsoft actually offers a fair amount that Apple does not. Time- and feature-limited trials, an improved revenue split, in-app purchases, and externally managed subscriptions are all available. There's even a localized version for enterprise software distribution.
The Windows Store will arrive with the Windows 8 beta in February 2012, just one month prior to Apple's sandboxing rules going live in the Mac App Store. Although the two are fairly different, it'll be nonetheless interesting to see how the two stack up in practical use.