Yes, you’re exactly correct. Marx’s most major observations of Capitalism were its centralizing nature, and this is why he posited that the natural next phase of human development is harnessing this and turning to full public ownership and central planning. If you want an “intro to Marx,” I made a Marxist reading list.
This is all wishy-washy vibes based analysis, though, which is why I urged you to take a materialist perspective. None of your comment answers that.
Trump is explicitly hand-picked by the bourgeoisie to fulfill their will, as has been the case with all US presidents. He is not above them, but a servant to them and their interests.