There's nothing official afaik, but I always assumed there was some kind of exclusivity deal with Sony.
The Persona 5 Royal "Royal Experience" opening event featured key people from Sega, Atlus, and Sony discussing the importance of the Persona series.
personacentral.com
I've seen a lot of people use this article as evidence that that Sony had an exclusivity contract for Persona 5 because supposedly Sony stated Persona was important to them, but I've debunked this, Sony never actually stated that. This was an editorial line added by Persona Central that is not in the original Japanese article.
Japanese speakers here can check the link in my tweet.
Does this mean there was absolutely no exclusivity contract for Persona 5? No, just that this article is not positive evidence for that case.
So now I'd like to give my
OPINION on the status of the mainline Persona games.
This is just my
SPECULATION but based on sound reasoning.
Persona 1-4 I believe were de facto exclusives. I don't believe there should be much doubt about that.
What is a de facto exclusive? It means the platform holder did not make the publisher sign a contract for the games to be exclusive or pay for them to be exclusive. The publisher just decided to make the game for only one platform.
At the time the PS1 and PS2 had the largest audience for the type of RPGs that Atlus wanted to make. Their contemporaries the N64, GameCube, Sega Saturn, DreamCast and OGXbox had a much smaller market share. And the handhelds had separate games developed for them instead.
The PS2 in particular really was the only game in town at the time with an overwhelming market share in Japan.
Now let's fast forward to Persona 5, did Sony pay for an exclusivity contract for that game?
First let's ask what is an exclusivity contract for? Well the platform holder draws up a legally binding contract and pays the publisher to release the game on their platform alone (at least for a limited time).
OK, so P5 full development began in 2011 and was announced in 2013 for the PS3. I think a potential contract would have been drawn up between the start of development and the eventual announcement. So at that time in Japan (remember, this game was released in Japan first, so the first consideration was the Japanese market) what contemporary platforms would Sony have been paying to keep P5 off of?
Well the Wii was still around in 2011 but at the end of its life, followed by the Wii U, then there was the Xbox 360 followed by the Xbox One.
There also the handhelds; the 3DS, and Vita.
None of the those platforms were viable for the ambition that Atlus had for P5 in Japan in 2011-13. The Wii was almost dead at that point, the Wii U was a flop, the 360 had a very small market share, and the Xbox One was DOA.
And the handhelds were not strong enough for what Atlus wanted to achieve with P5. So I don't think there was any chance that Atlus would have even bothered to develop P5 for any of those platforms. Therefore why would Sony have paid to have delayed development on any of those platforms?
And then there is PC. PC gaming is growing but still small in Japan today, but in 2011 it was miniscule and not a consideration for Atlus.
To this day P5 and P5R have still not been released on PC.
IMO Sony would have had to have the foresight, somewhere between 2011 and 2013, to know that P5 was going to blow up once it hit the worldwide market. I personally find it hard to believe that Sony paid for exclusivity for an (at the time) Japan only game when Persona games prior to that had not sold much than 1 million.
Also consider this: what has stopped Atlus releasing Persona 4 Golden on PS4? The game was successful on Vita, what stopped them releasing it on the PS4 in 2014? 2015? 2016? Before the Switch even existed? What about now? They released the game on Steam where it has sold well over 1 million but still not on PS4? No, rather I think this is Atlus's own ineptitude.
I know there are some conspiracy theories that Sony have paid to perpetually keep the entire mainline Persona series off of other platforms but that doesn't make any business sense to me.
I think that a simpler answer is that there is more of a business understanding between Atlus and Sony but not one that is written up in a legally binding contract, and I don't think money changed hands for exclusivity. I think P5 was a de facto exclusive with a marketing deal.
There is plenty of evidence for a marketing deal, for example the PS4 slim was timed to release alongside P5 in Japan and there were advertising campaigns around that.
Does this mean that Sony would not pay for exclusivity for Persona 6? No of course that is possible but I honestly think there will probably be no need for them to because I think Atlus management is misguided enough to make it a de facto console exclusive without a monetary incentive.