Which business are you referring to? His university? Vodka business? Mail order steaks? His airline? Maybe you are talking about his casinos? Then, there was, "Trump, The Game", not to mention Trump mortgage, TrumpGo.com, and Trump Magazine.
And, yes, He did get a tax cut passed. That took some really savvy politicking! The cut disappears in, I think 2022 for individuals (not for him) and will carve another $1 1/2 trillion deficit for your kids and gran-kids to pay off. In one year, the only two promises he kept was the tax cut and the Supreme Court appointment. I am very relieved that he prefers to play golf than to actually work, myself. I no longer travel oversees, so i don't have to face the rest of the world's derision for a guy that even our allies refer to as a clown. i won't even go in to his dismantling consumer protection, unleashing the financial industry from regulations (Because it worked so well back in 2008!), gutting the environmental protections, opening up the Gulf to new drilling (because the horizon oil spill would NEVER happen again!) Appointing DeVoss to the Dept of Ed. (which is a cruel joke), having over a 30% turnover rate of his own appointees in one year, and now ranked the worst president ever by almost 200 presidential scholars, and we must not forget his inspiring speeches about himself in his 4th grade vocabulary!
But, hey, as Ben Franklin once wrote to a guy who was asking for a reference on someone that he had fired from his print shop for incompetence, "If this is the caliber of employee that you are looking for, you won't be disappointed!".