I think it might do some good. I mean cheap or free software on the PC has dipped in quality, now that the big guys like Google are in that 'market'. Apps might give smaller teams or individuals the chance to enter the market again, instead of using the same software that we already know about, we might go looking for the software we need. Also, it might encourage people to make decent GUI's and maybe spend a little money on visuals.
My point is that most of the free software is ugly as sin, and often not intuitive or enjoyable to use. For example, a lot of people have a use for a sound file editory, but its the sort of program that people just wouldn't pay a lot of money for, if anything. There are free programs like Wavosaurus, powerful and feature packed but you have to know what your doing. General users might use an app store to find a wave editor that is easy to use, rather than trudging the net, with it's malware and broken promises.
App stores are often very cheap as well, look at some of the software packages you can get from the Mac store for £5 or less... choices like that for the PC would make me sign on. We keep reading about how PC gaming is on it's last legs, yet we are expected to pay through the bloomin nose, it's about time we saw some bargains. Good PC peripherals cost a lot of money, good PC software costs a lot of money, and even when we download our games from Steam we are paying over the odds. Last game I bought was Dead Island, £30 for a download game, no disc, no box, no point expecting the price to come down. Hmmmmm, pay £30 to download a PC game, or pay £30 for a 360 version that I could sell in 2 months and get half my money back. Buy Portal2 for PS3 and get the PC version free. If PC gaming dies, Valve better organise the funeral. When the retail experience is exactly the same as pirating, then it better get cheaper really damn quick.

Health, Ammo, and bacon and eggs!
