Nintendo buying From, a studio that really doesn't develop on their hardware at all, would not only not make sense, but Neogaf would burn down due to rage.
For the very reason you stated it would make sense.
They don't develop on their hardware.....
They would be giving the base something new as they haven't made games on that hardware like Switch and haven't made Nintendo stuff for generations.
Thus....its wanted, the market is wide open and they'd be filling in a gap of something they DON'T HAVE.
Did some of you not realize that? Why would they NEED to buy a team to provide them of something they already have lots of? Its why many times I stated it makes sense that Sony doesn't make much if any JRPGs, they already get the games that move the most units ON THEIR systems, thus...they are not gaining much as the majority of said fanbase buys on PS anyway ie KH, FF selling majority on PS means its irrelevant for Sony to chase such a thing by making their own or buying a team that makes that etc.
Nintendo on the other hand has not From Soft titles exclusively and it fits many designs of what some Nintendo fans are already used to.
So not making games on the hardware already, is the justified reason sir.