You built a factory out there good for you. But I want to be clear. You moved your goods to market on the roads that the rest of us paid for. You hired workers that the rest of us paid to educate. You were safe in your factory because of police forces and fire forces that the rest of us paid for.
As you may recall Truman was extremely unpopular when he finally left Washington in 1953 thanks largely to the Korean War. Today however he is thought to have been a solidly good president a 'Near Great' even in the terminology of those surveys of historians they do every now and then.