At the moment i dont think its a problem because kids love these type of Nintendo games, and at the moment the interest in those games arnt going to decline. ultimately this seems to me to be a question is who are the consumers Nintendo are catering to.
because yes gamers might prefer causal based games that are short when they're on the train home or whatever. but the gaming industry is not founded on these users, its founded on the core gamer, such as myself who whill buy at least 6 or 7 core games in a year. and those gamers will always support Nintendo if Nintendo provides them with great software.
so its not a problem because the company will always be able to rely on a market for revenue, even if some of that market is lost to mobiles, or other software companies. but there are millions of users who will support Nintendo imho so i dont think it will ever be a problem tbh.
