From a business perspective, it doesn't make much sense because Platinum games are not really that big, meaning that Nintendo would have to invest in games that may not return profits.
From a "gamers" perspective (for the lack of a better word), this will will mean Nintendo is interested in more mature rated games, which will not increase their profit, but will change their image. The problem is that Nintendo stigma with "kid games" is so powerful that buying Platinum won't change that, they had to buy the entire game industry for Nintendo to change their image.
The "core" gamers opinion don't really matter in long term so Nintendo should stick with the first option and keep Platinum as it is right now, making exclusive games for them from time to time.
Nintendo and PC gamer
