Even though I agree 100% with your overall sentiment, Boston, I have to assume that Nissan is actually at the forefront of this.
My guess would be that Nissan said to Kaz something along the lines of "Get the GT Academy ready to go asap, and don't even think about patching/fixing your game right now."
I think once the academy is over, we'll start to see patches (and hopefully some DLC) soon after.