The last four presidents have gently asked "oh please pay your agreed upon fair share" and nothing.
At least Trump speaks clearly, of course the Fake News (NBC, CBS, ABC, CNN, MSNBC) makes a big deal over Trump just doing what other presidents did, but more effectively.
The problem with his speech......he stopped short of levying repercussions for non-payment. Let them know they'll be on their own if they don't pay the piper.