i) Regarding photoshop & CS3 in general. The licensing does, in fact, allow you to install it on 2 machines, a desktop and laptop, provided that they are not used concurrently. (more of an FYI).
1) I completely agree with you that the iTS was originally designed for media, and while the RIAA and MPAA would ultimately love for each member of a family to purchase a copy of a given album/movie, I think even
they know that it's pushing it. But software distribution is different, as you mentioned. And while fairplay does a good bit to curb rampant piracy, it's definitely not perfect.
2) It really needs to come to a compromise/resolution between the creators and the customers. Because if a customer had an iPhone and iPod Touch and didn't use them at the same time, should he be required to purchase the same app twice (a la point i)? I don't think so.
So I think it basically comes to this:
a) Require us to purchase multiple copies. Piss off customers and drive them away to free apps or to apps whose developers don't mind the sharing.
b) Adjust prices, albeit slightly, to compensate for "family-licensing". Approx 1.3-1.7x the price of the app seems appropriate based on Apple's own family-pack model.
c) Implement a model similar to the iTS movie rentals. A paid-for app can only be synced to one device at a time.
d) Do nothing, accept that the paradigm for mobile apps is shifted with respect to desktop licensing.
I think the correct answer is B and D depending on the application. Fortunately, it seems like the app store is flexible in terms of pricing, allowing developers to change prices on a whim. Also, the market will drive adoption. There are good free apps, and there are good apps that cost decent money. And there are jailbroken apps that completely bypass everything the App Store has to offer. As I mentioned in point D, the OSX Touch platform is a new paradigm for everyone, really, and as such, we are going to have to shift our thinking, everything from applications to even computing (no c/p, no user documents folder, etc).