Trump is a classic con man. By dint of his constant bull$hit, he did succeed, to a degree, in creating a luxury brand--but the only thing he's really good at is staying one step ahead of the debt collector and sticking other people with the bills. He suckered a lot of people into believing he was a good businessman. Read any serious account of his casinos in Atlantic City--he overspent wildly, declared bankruptcy four times--and through financial machinations managed to slither away and stay in business. He doesn't even own most of the buildings with his name on them. Most if not all U.S. and European banks stopped doing business with Trump years ago--that is why he ventured out and stared soliciting investments from dirty/criminal types. Enter the Russians--Putin cronies have invested big sums in Trump properties. This is why Trump slobbers over Putin. Trump has tried to slap his name on all sorts of products--an airline, food, etc., etc. They all failed.
Let's also say this: Immoral, dishonest people get away with stuff. And Trump is not anything is not deeply dishonest and immoral. The man has no shame. He's been bragging for 25 years about how rich he is--how tacky--and yet has stiffed scores of contractors because he thinks he can get away with it. And THAT is the person you voted for for president! Well done. He's dirty. Look at Trump "university." Total con--stealing money from average Americans. He claimed to have contributed lots of money to various charities--and did not. Washington Post did a major investigation of his charity claims--he never sent the money. He used money from his own foundation to commission big oil paintings of himself. He's basically a mobster--and a stupid one, who is probably going to go down because he quite clearly has obstructed justice in the Russian investigation. And however one wants to describe his business skills or lack thereof, he's a disgraceful human being and absolute embarrassment as president.