Nintendo is Nintendo. As much as people want Playstation to be like Nintendo, it won't be. Nintendo has franchises older than me, franchises known and loved by a lot of people. People buy Nintendo consoles to play those franchises they know and love. What does Sony have? Franchises that rotate every few years? Tlou? God Of War? Most people I know that own a Playstation bought it for Fifa and well, they saw this game called TLOU and God Of War and gave it a try. I wouldn't compare them.
They do need to concentrate on their own games, but they need to expand, create studios, create new games, cover all genres.