system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did Donald Trump end up with so much money?

He obviously inherited a good chunk, but I've heard all sorts of tales about how (and how well) he handled his money after that: "He would be worth more if he had just put his money in the stock market"; "He took advantage of the bankruptcy system"; "He made back his money by selling his name"; etc., but I don't have a clear picture of what exactly he did and whether he's an incompetent buffoon, a devilishly shrewd businessman, or something else. So I'd like to get a clear picture of how he got to where he is, so I know in what ratio I ought to be despising/mocking him.
gpt
he made a business of getting investors to pay for a building to be built, called trump hotel, tower, ect. he didnt use his own money that had been used up with a previous failure. so he goes to people a b and c, and asks each for a million bucks. b and c agree. he uses that  million, tells a "hey a, ive got 2 million bucks, give me another million and ill make a building worth 6 million" so a goes along with it, because who doesnt want to double their money? then trump takes out a cut, builds the towers, and promises a b and c their money back, afte he gets tenants. if the building doesnt get tenants, then he files for bankruptcy, and loses a b and c's money, but he gets to keep the chunk he had taken out. rinse and repeat.
edit: if he does get tenants for the building, then he says, "A b and c, i have made you money, now i wish to put up another building, but i need 2 million each" and he keeps going like this, making more money by taking out a cut each time.