It is why he not Fred Jr (who died of alcoholism at 42) went into the business. His son Donald Jr was given time to grow up before he was brought into the business.
Sounds like Donald was handled very reasonably by his family, and partners of same.
I have ridden down Trump’s childhood streets (on Googlemaps.com). Very ordinary. Very all American.
Trump worked hard and learn the family business...and then used it to change the Manhattan skyline.
He has the smarts to change the DC skyline...and they are scared to death.