I believe you are conflating having money/assets with being incorruptible, which is simply not true. Especially for a guy like Trump and his fixation on power and "winning" at all cost, money becomes an important way of keeping score. This is true of most millionaires after they've reached a certain point and the practical need for money becomes non-existent but the need for power becomes all-encompassing.
Speaking of assets though, one of the Trump family's core assets is the network of sprawling low-income housing complexes throughout NYC. So the guy who disdains poor people is actually greatly dependent on them politically and financially. That is the one group he cannot afford to piss off.
Now this fixation on Hillary and butterymales, how is this still going on? Give it up man, it's been 3 years, she lost! Why is anything that Hillary's done still being used to justify Trump's unethical behaviour? Besides, they've been doing the same exact thing with their emails except possibly involving even more people, including Jared and Ivanka using private email servers to conduct official business:
https://www.washingtonpost.com/polit...cations-tools/
Butterymales!