I agree to a certain extend with spemanig here. In the last couple of years we have been watching a desire (and a trend) from all companies in the industry to go full digital. And I believe that in a not so distant future we will be there.
BUT I also believe the market is not ready for that yet. And it will not be ready by the time NX arrives. So I truly doubt that Nintendo will go that route with their next console. And if they do.. well, I think they will regret it.