>>715834524
Nowadays, we're at a point where fans and haters alike have no idea how the Holy Grail War works.
Literally, in the original novel, the main point is that the war is a lie, the rules are a joke, and it was all a ritual in which only the three families could win.
The only three characters who know about this are Kirei, Iliya, and Zouken.
The rest either never find out or find out at the end of each route.
This is the reason why there was never a "winner," because it was never a game to the death.