Unfortunately I don't think it is that simple.  Some of his base indeed are an accurate reflection.  But many are so marginalized (low education, no chance for meaningful or adequate employment, etc) that they were willing to grasp at anything that looked like a life line even if so many others knew it was being offered by a snake oil salesman.
President Trump is very successfully accomplishing his agenda.  He is quickly dismantling any government oversight that protects the citizens from business while also eliminating or lowering the taxes that immediately impact his family and their holdings.  He, and others of his wealth, know that even if he eventually loses power, it will be extremely difficult to reinstate those measures that protect the lower 95% of the population.  Putin has successfully turned Russia into his personal bank account, why wouldn't other billionaires at least attempt to do the same with the USA?