There's a reason.
People take GT as fact. The number of people who really think that the cars look, go, handle and sound like that, or that they can drive "this" on "that track" in the game they go on to replicate it in real life is... staggering. The disclaimer at the beginning of every game means nothing to them - they could hustle Jay Leno's Tank Car around Laguna Seca like a pro! (one111one!).
From a marketing standpoint this is brilliant and a knife in the heart at the same time. Manufacturers want their awesome halo cars and best-selling models to be in the game, because they appeal to the next generation of car buyers before they even buy cars. The Skyline, for instance, would be nowhere near the fapicon it is without GT. They grab the hearts and minds of the future market.
But then you get manufacturers who are kinda precious about how their cars perform. Ferrari have always been notorious for it but they've apparently relented, to be replaced by Porsche. Remember how antsy Porsche were about the GT-R's Nuerburgring time? They went out and bought a GT-R and tested it themselves to prove it couldn't do the time stated - and of course PD and the GT-R are kinda inseperable (in fact Nissan in general).
And then there's the thorny issue of damage. If these people think a car looks, sounds, handles and goes in real life like it does in the game, they'll think it crashes like it does in the game. Manufacturers get very precious about how safe their cars seem to be and will never allow the passenger cell to be compromised even if it would in real life - never mind that the average GT crash would end with any road car "ending up in pieces maybe an inch big". Ford will get annoyed if their cars seem to be easier to damage than Vauxhalls/Holdens/Chevrolets (depending on the market), Peugeot with Renault, Toyota with Honda and so on and so forth even, get this, if they are in real life.
Ultimately, "real" damage won't ever be permitted in any game. "Realistic" damage won't be permitted either - cars will all be expected to deform at the same rate, except for manufacturers who aren't bothered (rare) or insist that their cars aren't so fragile and are then either excluded from the game or included because their inclusion results in good PR (Ferrari in Forza) - and in any case, real world individual vehicle damage testing doesn't stretch to a 140mph lateral nose plant on a crash barrier.
The best we can hope for is semi-realistic damage, where damage severity is extrapolated, energy/angle dependant, not vehicle-specific and restricted to certain vehicles. It's easier with privateer race cars because the manufacturers don't even own the silhouette and you can apply whatever damage you wish.
It's pretty much GT being a victim of its own success - the more "real" it gets, the less comfortable some manufacturers are about it.
Many things you said I agree with but your general premise I cannot.
You make it sound like GT is so amazing that manufacturers won't allow damage in GT but don't care about ALL the other racing games because who even notices those games anyway. O_o
And while I'm sure you are right about manufacturers not wanting damage to be so realistic that the cockpit get's crushed ( implying the people inside are dead ), but that still doesn't explain why they have had ZERO damage up untill this point and why they still can't get damage onto more than a small percentage of their car list. And the damage they have implemented isn't particularly good.
So unless you can provide some proof that manufacturers around the world consider GT to be "too good for damage" but don't care about THEIR cars being Damaged in virtually every other Racing game under the sun, I just can't accept your argument.
I think the truth is that Polyphony simply ...
1. Didn't want to do damage modeling.
2. Didn't know how to do damage modeling
Obviously the pressure from every other game having damage has forced them to change their position but they did so too late not giving them enough time implement it for all cars.
I see the "manufactures won't let us" excuse as just that..... an excuse.
That does look pretty amazing. And the Sound OMG the SOUND!👍
I agree that Slightly Mad studios should have said what they did, but quite frankly their damage model IS more realistic.
That may change for the final version of GT 5, but based on Gamerscom, Polyphony can hardly claim to have the most realistic damage around. Far from it.
SHIFT comes out in 1 week and I'm pretty excited, but I'm not exactly sure what to expect..... how much like GTR 2 will it be?
Sleeper Hit? Can't wait to find out