Artificial rearing

Our program for nourishing new generation started 27 years ago at all costs and he has grew up as one of a social member now? He appears so except in front of me?
He insists some additional payment to our new laboratory construction for his private new automobile, over 3,000,000 yen, how come. His apology is like this, he has an enough right to be presented some anniversary gift celebrating his graduation from private medical school without making any detours, one year delay means more 5,000,000 yen for an additional tuition? According to his opinion, passing the National Examination for the medical license without any delay is worth celebrating, if he had failed in one of the exam his parent had to be obliged more expenses. Actually some of his school mates are staying at the University still now. Though his opinion has some convincing, I feel some deception in his saying?
First of all, considerable payment for new laboratory would be done sooner or later, so now is not the time!
Remembering the past, he took my B4 SUBARU Legacy 3L Flat 6 motor few years ago and he modified as he liked, most axle suspension parts, into noisy third party exhaust system, driver's seat into racing tight bucket type and interior decorations. He has spent plenty of money without following any advice saying he did wanted to know by doing anything by himself. His next target is BRZ SUBARU new sports car.
Artificial rearing circumstance might did harm to his independence?
Now he is refusing to work as a general practitioner here in new laboratory nor taking the right to represent our business instead of me. Probably wants he to continue play and to spend some student like sweet daily lives?
Anyway, I'm going to wait until he would realize his own situation and start to move voluntarily, may be it takes 3 to 5 years more?