According to Harada, the most challenging portion of T7, was converting Noctis's stage to Unreal Engine in Tekken style. Apparently the engine used by Square was changed much differently, to the point that they had to remake the area entirely for T7's UE.
In short, Cup Noodles also funded it since Harada stated that if Cup Noodles wasn't involved too much, Noctis would of been released without a stage.
The moment you give them that sense of placing them on a pedestal, they'll act the way they are. The moment you give them thousands of dollars, some become narcissists.