We have sometimes elected business people to legislative bodies, but not generally to the U.S. presidency. For that job, we have tended to go for politicians already holding elective office at the state or U.S. congressional level or else military leaders.
Donald Trump is the first president I can think of, at least since the twentieth century, of one elected to the office directly from a business career. Some of his supporters reasoned that a business person practices efficiency in order to make profit. Thus, Trump could drain the inefficient swamps of the U.S. government.
The problem is that a business leader is more like a dictator. Business experience does not necessarily prepare a person for heading a representative government.
As he took office, Trump appeared to think that members of the U.S. congress were his board of directors, beholden to him to carry out his wishes. In fact, they are not beholden to him; they owe their jobs to the people back home who elect them.
As a business leader, Trump could fire any underling who disagreed with him, free to make absolute loyalty to him a primary requirement. This appears to be his style as president.
Like the French king, Louis XIV, he has assumed the role of Sun King. He takes criticism personally, spewing unverifiable insults on anyone, even a supporter, who dares intimate that he isn’t the greatest president who ever held office.