"Money" is irrelevant and meaningless with his powers and how can you forge a "genuine relationship" with those powers when you'll be controlling people, even if you don't intend do so .
They showed that in the show when he was trying to buy Jessica's old house. He had to be careful about how he worded everything he said to the guy he was buying from so he could be sure the guy was okay selling it. That would pretty much be every conversation with that power. Anything you phrase as a command people would do. Saying some basic shyt like have a nice day would force someone to act against their free will and if you just got mad and told someone to go fukk themselves they would try to. So trying not to be an a$$hole or trying to have a real connection would take so much more work if you had these powers. It would be hard to know when people liked you for you or were just saying what you wanted to hear because they had no choice.