Do you also recall that the United States, through President Wilson, got next to nothing out of World War I, even though we broke the stalemate and won the war? That’s the model that presidents since then (FDR, Truman, LBJ, Nixon and both Bushes) have used. We are the opposite of the ancient Romans.
The US got paid. That is why the French demanded such heavy war reparations from Germany -- an underlying cause of the German economic catastrophy that led to WW2.
Woodrow Wilson may have been a pie-in-the-sky internationalist, but he was making sure that US banking interests were covered as far as war debts were concerned.
FDR after WW2? Different story all-together.