Kaz doesn't live in a bubble (most of the time), I'm pretty sure he knows they're a desirable brand. He's been asked about them being in GT several times over the years.
Still, been asked to add Porsche before the deal ended, and now that that deal is reaching an end, has a new sense of priority. If they feel it's highly demanded by the fans, then they might work to bring them.
They don't need a 'real' reason, they can just say no.
As far as GT:S goes its not going to change my buying intentions one bit if they do licence Porsche.
With AC already having them and PCars 2 looking very, very likely to also get them its not exactly a USP for PD if they do manage to get hold of them.
No, to say no you have to have a reason. They might not want to share that reason, that's up to them, but to say no, they had to have a reason, whether it's a little disagreement, or a huge problem for Porsche that turns them off. There's no "No, because I can say no". It's an invalid argument.
I didn't said that you would buy the game because of Porsche.
While we don't know if PD is looking to include Porsche, Kaz has recently commented on the situation and relationship with Porsche. I'd be very surprised if they're not aware of the changes.
The difference now is that Porsche gets to decide what games feature its cars, not EA. They still may decide GT isn't for them. The EA exclusivity deal has come to an end at arguably the worst time for PD in terms of including Porsche, in certain ways: this is a marque with a rich motorsports history, the vast majority of which would be ignored in a game like GT Sport (at least, how we know it currently). The oldest car is from 2009. The classes are PD-designed, and littered with fantasy cars. It's entirely possible Porsche won't see much appeal there, in the same way Ferrari and Tesla are super-guarded about their cars being put in comparison tests in the real world.
AC, PCARS, Forza — they all offer more opportunities to show off new and old cars. Plus, they make the PR department happy, since they can also include the big-selling crossovers.
As I mentioned before (or maybe in the other thread), there's also the question of whether Polyphony/Sony see it as worth-while to include Porsche. It likely will still come with a price tag, and if GT is already the top-selling racing game, it may be seen as a needless expense. Of course, it could also be seen as something to further solidify that position...
If Porsche is looking for the most exposure, it's hard to argue with attaching their name to one of the best-selling racing franchises in history. But, it certainly seems that exposure is not the main deciding factor for Porsche's partnership decisions, and that implies Polyphony isn't their first pick. If they were, we wouldn't be talking about the special deal Porsche made when they approached Kunos Simulazioni.
If Porsche has an high demand from the GT player base, then it's likely that PD seeks Porsche. Only then they will see if a possible deal is worth it. If they are aware of the changes, we don't know, only when someone gets an interview or manages to talk to someone from PD about that subject, we will see.
The thing is, there's no logical reason for them to not want their cars in GT. Fictional cars don't seem like a reason, since they won't hurt their sales nor image. One might say "Oh Porsche won't like seeing their 919 loose to a VGT car", that shouldn't be a problem, wouldn't it be the exact same "problem" for them to loose against an older LMP1? And some will say "that's why we need all the LMP1 from the same year", but then again, the class would be limited to 3 cars (4 at max).
Any other possible reasons?
Sure, they could want a bigger representation of their older cars, but we don't know what are the planes for the future of the game. Will the game feature classes of classic road/race cars? For now, we don't know, but it is likely since they keep giving the prizes in the Concourse d'Elegance and they had already moddeled some pretty exclusive cars. Who knows if after they complete these 5 main classes/groups, they will add some more.
Reviews in real life might affect the sales and reputation of said brands. Reviews with lap times in them is something different, since not every car goes to those reviews "stock", some having semi-slicks and tweaks. That's why Nurburgring lap times lost their appeal and became redundant. But this is another topic.
The more games they have their cars in, the wider they can spread the range of new and old cars through those games. GTS would not have crossovers (atleast now), but has space for Caymans, Boxters, Panameras, "base" 911s (non-GT3/GT3 RS/Turbo/R), and anything that usually gets skipped in other games. And of course the high-end sports cars/supercars.
Exactly, PD or Sony might think it's not worth it, if the price to get a few of their cars in the game is too high. We don't know how those licensing deals work, if the more cars you get, the more you pay or if they just pay the brand and then can model whatever they want.
Do we know the terms of the deal with Kunos?
They might very well have seen a lot of potential in AC, as pure simulators go. Possibly having a wider player base than the other hardcore sims, could help the deal. Or they could have seen the fidelity of their physics engine, and thought that their game could be a good place to show off the handling of their cars. They could be seeking for a long term partnership for a Porsche branded/approved simulator or something. Could be just a mix of all this, could be nothing. Could be just a good opportunity for a deal like "we grant you a free license, and you give as X percentage of the profit from our Porsche DLCs".
Doesn't make AC the better game, compared to the others, because Porsche chose them, or the others "less appealling" though.