Looking at everyones post and then back at mine made me realize my wording was poor.
What I should have said is that Nintendo, when it had popular 3rd party JRPGs experienced a success that the sales of the classic suggest could be experienced again.
The idea is not to have Nintendo produce them, but request new entries in those franchises. I would argue that the idea of them having JRPGs on the console already suggests they are aware that the market for them exists. If you were told that a new Suikoden game was coming out exclusively for the Switch, would it convince you to buy one (assuming you weren't already)? If there are enough "yes" answers to that, it makes Nintendo's while to look into.
Sorry about the confusion. Oh, and I agree about the real time combat.