I agree but this isn't limited to their older games.
In some ways the Switch feels like a step backwards from the WiiU with the features.
I agree their easiest solution would be to create an emulator that just runs all their games. This service if done right would be compatibles with all their consoles going forward.
I kind of get it though the WiiU failed so they rushed out the Switch. Hopefully with the success of the Switch they realise they got time to make the next gen switch even better and a more rounded system