OK, but that's not viable for everyone. The only applications where the vast majority of the userbase is going to have Server or Enterprise editions are busine

OK, but that's not viable for everyone. The only applications where the vast majority of the userbase is going to have Server or Enterprise editions are business applications, and even then, to use your application, your customers have to manage expiring developer licenses on each of their machines. That's a lot of hurdles for the average application, where most of their customers don't have the right version of Windows and can't be expected to obtain and maintain a developer license.