We have some JRPGs exclusive to PS4 and Sony still finance some like FF VII remake and Shenmue 3.
Shenmue 3 was financed via kickstarter. Sony only gave them stage to promote kickstarter campaign. And, yeah, it doesn't even count because it will be on PC so you don't need PS4 to play it. FF7 is a question. Might go multiplatform like FF Versus XIII did. Because FF7 remake will be next gen game. Considering they had to start over last year, it isn't releasing until late 2020 at earliest. So, this kinda backs my point - there are almost no true exclusive JRPGs that require you to have PS4 in order to play them except for maybe some small ones that don't release in the west.