Trump is NOT a successful businessman
He inherited a grand total of around $400 million from his dad. Someone ran the numbers about what he got from his dad and when (including the tens of millions to bail out his money losing casino until I guess he said "no more" and it was forced into bankruptcy) and if the money had been invested in an S&P 500 index fund he would be worth $15 billion today. In REAL money, not his fantasy $10 billion net worth he claims, which includes an $8 billion valuation of the Trump "brand".
So tell me why he's so smart and successful to be a billionaire, when any of us would also be a billionaire if we had inherited hundreds of millions of dollars from our fathers decades ago?