Might The Mac App Store Lead To A New Class Of Micro-Apps?

This weekend, Ryan Block put up an interesting post on gdgt entitled: Will the Mac App Store have enough to sell? He raises a number of good points for why Apple may not be able to replicate their current App Store success with this new desktop store. But I'm left wondering if the store won't lead to a new class of app: a sort of micro-app for the desktop. Block makes the following points: a) high-end software like Photoshop won't be placed in this store because Adobe won't want to give Apple a 30 percent cut of all sales. b) most paid desktop software is dead or dying due to free replacements on the web. c) Apple's strict rules will prevent developers from using this new store for test or demo software. I agree with all of those points. And that's why I'm wondering if this store won't instead lead to this new type of app environment.