I alone will decide what is best for the country, just as if I were running my own business. I represent in my own persona, in other words, all that is necessary to provide an effective democracy.
But Trump is not the first businessman to learn the hard way that the techniques that worked in business can create an unholy mess when applied to running the country. In business, at least in the Trump view, there is a very obvious single bottom line to aim for. People, mainly employees, do as they are told if they want to keep their jobs.
The absence of even a scintilla of self-doubt is everything - if people don't like it, they can lump it. The only rules are that winners make the rules and that the market always prevails. Ethical behaviour has no value in itself but is worthwhile only if it is rewarded by the market. Success comes to those who can get away with as much as they can.
Politics, though, is altogether more complex and subtle. In politics, people do not leap to it when they are told what to do. They need to be persuaded, cajoled, positions must be changed, other views accommodated, compromises reached, alliances formed and broken. Lessons are learned and voices from all quarters are heard and listened to.
And that is just as well. Politics, democratic politics, is meant to be complex and confused. If governing the country was just a matter of following the prescriptions of one person, or of allowing an allegedly value-free market always to decide how the dice should fall, then what would be the point of electing those who represent us? Why would we bother to consult the people if each issue could be resolved by the decision of a single business leader or must follow the dictates of the market? Why hold elections or debate policy issues if a Trump or the like, convinced he is right about everything, can simply settle every issue for us?
The whole point of democracy is to ensure that important decisions about the society we live in reflect a wide range of interests and are not taken by a handful of people, acting as though they were running their own businesses. The legitimacy conferred by the democratic mandate is intended to offset and restrain what would otherwise be the overwhelming power of those who dominate the marketplace.
If we allow that small number with real economic power to seize control of the political process as well, and bend it to serve their particular interests, we end up with a society that most people do not want. The last thing we need is the single-minded self-obsession of the profit-focused business leader - as the Americans are finding out.