Adobe CS Distribution
This is already available from Adobe as a Digital Download.
So why would they need it in the App Store.
Sure they can have elements & lightroom in there if need be but they are already available digitally.
It was true (until Jan 11) that a digital download from Adobe was more expensive than getting the Boxed Software. This was due you you paying Irish VAT as the d/l's came from there. The bixes were shipped from the UK so attracted UK VAT.
For the larger 'Pro' software having them in the App Store might not be such good business for the supplier. For Adobe to take a 30% hit on a Full CS purchase might be more than they could swallow. They might just raise their already pretty hefty prices even more.