I'm pretty sure that Kazunori Yamauchi and PD in general
do care sincerely about their loyal fans, but it is likely not just about them. Sony etc. are no doubt pressuring all game producers to up the stakes when it comes to making money out of their games. Up until now, PD have managed to strike an appropriate balance, but sadly they have now crossed a line with GT7. My ¥2's worth - Cr. rewards need to be about 10 times higher than present and MTX prices at least 10 times lower.
I do agree with
@Auditore insomuch as the offline playability of the game is practically non-existent and needs to be changed. It was bad enough in GT Sport, but GT7 being effectively bricked when the servers go down is simply not good enough for a flagship title. And as @Nowak alludes to above, it would not be so bad if the game were not constantly being updated - we're already on v1.07 and the game's only been out for 13 days...!