The major problem isn't advertising. I would not buy their game even if it was slapped in my face.
It is distribution. A lot of Nintendo old faithful grew up collecting game. This was partially due to the high standard in games that used to come out. It become a pride thing owning a nice game collection. Go to any opshop for example (even during the height of Wii) and there be perhaps be 1 Wii game for every 20-30 PS360 games. The wii game would be shit ones and the other console games would be mainly AAA titled like FF COD GTA. Since the PS1 day a lot of those gamers grew up pirating and owning big legit game libraries wasn't a common thing. Not saying that this is true for all gamers on those systems but for majority collecting them is not a thing.
Now Nintendo gamers like me are dinosaurs who will never change. I will ONLY buy physical games, even on my other consoles. Nintendo should realise this and publish the better indy games and get them on shelves. This is what will help sell their games.
