What do you mean "justify"? If you mean pay tax and report VAT, that is exactly what the EU is made for. The common market is about the only thing that actually works in the EU. If you can sell something in one country (like UK, Ireland, Germany, France) you can sell it to any country in the EU. Actually, not doing it might have legal issues as that could constitute infringing on the common market.
Originally Posted by viper151
Unless you mean "legal issues" as in something that any one person company (like mine) can solve without one lawyer involved and with a single form, then sure, there are "issues"
Regardless there are no legal problems buying applications online in Europe from the US anyway, I've bought scores of apps and big software packages from US stores using Swedish issued payment/credit cards (VISA/Amex). There are treaties established for that.
What could be problematic are:
- Export restrictions
Like applications using cryptographic algorithms or apps using software patents (software patents are illegal in the EU, therefore legal EU apps could be illegal in for example US). For the few apps concerned the app store must have restrictions.
- Service license restrictions
Like streaming licensed content, i.e. Pandora etc. For these apps the store shouldn't be concerned, it's the usage that needs to be restricted. A US user that has moved outside should reasonably be as restricted using the app as anyone else from outside the licensed area.
- Carrier restrictions
This is a special case of service license restriction, for apps specifically designed for a carrier, like the Navigation apps. For them there should probably be a combination of app store restrictions and service provider usage restrictions, just to satisfy their paranoia.
For the rest, just design a good app store user interface that lets me filter apps in languages I don't know and designed for areas I'm not interested in. When I learn a new language, travel or move I must be able to change my filter. It's not rocket science... Unless you start by letting carriers decide your strategy for you.