I find it kind of curious that they called it a "PC software store". They could have left "PC" out, still made their point, and continued their policy of distinguishing themselves from PCs. Strange for Apple marketing.
Steve Jobs referred to Macs as PCs several times. The definition of a PC does not preclude Macs.
http://www.merriam-webster.com/dictionary/personal computer
Apple generally wants people to "think different" about computers and technology in general. When we hear "PC" we think Windows. Apple doesn't want that.
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Apple would have a LOT MORE APPS available if they would continue to support OS9 and PPC. It is a shame that Apple has discontinued those. The hardware is plenty powerful to do the emulation. There are enormous numbers of titles for educational, small business and tools that could run under emulation. These great titles are now no longer available. Apple is destroying this programming art. The 1990's was the hay day of creative educational titles. Shame on Apple.
While it is a shame that current Macs can't run PPC apps, I don't think that Apple is destroying the programming art. It's really the opposite. Apple wants to keep apps current and fresh. Instead of blaming Apple for the lack of PPC functionality maybe the developers should update their apps to work with modern computers. Apple isn't a nostalgic business. It's a current one.