A businessman, especially a successful one, is no good politician in general. Because, running a nation is totally different from running a company in my opinion. Running a nation is not about making profits. But, a successful businessman CANNOT tolerate pouring probable profits into the losing part, which is definitely part of the company, and just try to cut it out to boost the profit. He might not tell the people from his employee. Some might wonder, but that kind of traits have been carved into those successful businessmen's bone, which CANNOT be easily changed.