Trump cared about what matters to the old Reagan Democrats. Reagan won them for the same reason Trump did, and the GOP could have turned the rust belt red long ago had they been less interested in internationalism and oil profits
"As a dog returns to his vomit, so fools repeat their folly" -- Proverbs 26:11
Ever quick to snatch defeat from the jaws of victory, the GOP has not even waited for the weekend to begin systematically dismantling the stunning victory their party achieved despite their best efforts. Trump has barely had time to shower and shave before his party began dictating to him how things should be run - the same way they were run before he showed up on the scene. The Grand Old Party seems incapable of learning from its mistakes - and its successes.