It's not going to happen as long as Nintendo is in the console business. If ANY company has expressed and has had a reason to believe in the power of exclusive software, it's Nintendo --the company that singlehandedly kept it's N64, GameCube, and Wii U console failures alive by their own software. The company that saw the Game Boy/Pocket revive itself for many more years after the advent of a single game called Pokemon. Iwata has expressed in the past the power of one killer game and how it can change the entire landscape entirely. Sony may have talked about believing in exclusives, but Nintendo is a company that truly believes it. The smart phone games are part of their greater strategy to broadly broadcast their IP to a larger audience buying T-shirts for kids, going to theme parks, and watching movies at the theaters and catching glimpse and hearing talk of Nintendo related product or IP. Pokemon had another surge after Pokemon Go on phones became a hit, and they had a Hollywood movie lined up alongside an already long running anime series and trading card game all leading to the next major installment for the Pokemon franchise, which is the RPG games where the next gimmicks, Pokes, and all take place, exclusively on Nintendo's gaming ecosystem.
Nintendo is expanding their IP beyond their consoles, but their aim has been, and continues to, be about bringing in a larger audience to Nintendo's gaming platforms --the only place where you can play Nintendo's biggest and newest games.