Absolutely, it's just that when you say 'charge for it' most people will make the pay X$ -> get Y.exe connection and not consider the very valid alternatives you listed - which may or may not be better for a particular application/service. This is especially important for the N900 as it has no DRM -> the alternative business models are MUCH more appealing than the classic store one. This also one of the problems with Ovi and the N900. It was conceived as an AppStore alternative and has little to no support for alternative business models which COULD be clean and viable. No subscriptions, no service-based payments, no donations, no support payments, etc.