Their market is on PLAYSTATION.

Simple.

Try to sell anywhere else and it'll be a loss, not a profit.

VNs are also released for the PC usually as well, though they are very popular on home consoles.

Now that I have had more time to think about my explanation, I can also give you two additional reasons why a Japanese company with a passionate fan base would choose to avoid putting games on PC. Putting a game on Steam drives down the prices of a game. Level-5 and especially Atlus like to maintain high prices on their games (as does Nintendo, though that's neither here nor there). Since their fan bases are passionate, they will buy the games at their high prices. Secondly, both Atlus and Level-5 work with both Sony and Nintendo extensively. Not putting their games on PC or other platforms (which would sell relatively insignificantly) might get them more bargaining power with either Sony or Nintendo.

If you're a fan of these types of games to begin with you most likely have a PlayStation regardless. Most likely they won't come out on Xbox given the size of the install base and lack of Japan fan base also. Even if a couple of these games show up on PC it won't be until a year or so later after it's initial release. Most JRPG's launch way later on PC. I think other than Zesteria this year it's been that way. That's why PC got Symphonia this year and not when it launched on PS3 2 years ago. Notice how Tales of Berseria is not announced for PC? Because the fan base for those types of games is on PlayStation. Same goes with 90% of other jrpgs. Ni No Kuni and others sell best on PS systems. PS pretty much saved that franchise and sold very well in the west. There's a reason it was announced at a Western conference and not TGS. The west PS fan basically saved this franchise and today's announcement was for them.

PS4 is where you go if you want to make a profit.

Xbox One has shown they don't care about JRPGS, just look at Final Fantasy 0. I do wish more RPGS would come to PC though, then maybe I would give up console gaming. If everything came to PC I'd be in gaming heaven. 

And there you have it. Ni No Kuni 2, PS4 exclusive.

The stunning Ni no Kuni II: Revenant Kingdom revealed, exclusive to PS4: https://t.co/6WGSKHicJz pic.twitter.com/cp8colwaWR

— PlayStation (@PlayStation) December 5, 2015

I have no idea why they'd release a game like Ni No Kuni on Xbox One when it has almost zero presence in Japan. The demographic of that platform couldn't even handle TR for crying out loud. It's going to sell like shit.

So know we know that even if something says "console debut" it could still be a full time exclusive. Meaning FF7R could very well be a full 100% PS4 exclusive by this logic.  

Alternatively, it could mean that it's a PS4 exclusive unless Nintendo pays them A LOT of money to put it on NX.

It seems like the NX is over a year away.  So alternatively it could be an exclusive and the NX and PS4 get a deffinate edition later.

Yeah. But Adam did say NNK2 was a PS4 exclusive before the trailer was shown. So that should negate the "console debut" wording. lol

Well, with FF7, SE did say that the reason it is "First on PS4" is because they only know PS4 is a gurantee because the game is early in development. I still think it's PS4 first then PC(like the original). Any console after that is a get on your knees and beg situation. Going by Hashimoto and Nomura's comments respectively this year before and after E3 saying "We want to help spread PS4's" and "We want to give gamers a reason to probably purchase a PS4." You can see where the mindset of the company is at right now.  If you anyone likes these type of games. You should know what to do.