I've been thinking about this perception that Trump is this amazing business person. Is it possible that Trump made all of his supposed billions because the Russians were using his companies as ways to launder money. He was chosen years ago as their mule and he happily obliged as it allowed him to appear successful. None of it actually a true success, just a number of shell companies which made money as a laundering service.
The kinds of companies which he himself wanted to pursue were things like the steaks and the wine etc which were disasters because he had no Russian money keeping afloat.