A point of metaphysics:
It is impossible for anyone to force anyone to do anything: you can adjust their incentives, but it's always open to someone to just refuse. And this is metaphysical because it's true no matter how the world is constituted: imperious curses wouldn't make this possible either.
But points of metaphysics are mostly (if not always) misunderstandings of some kind. What am I misunderstanding?
Can you force your computer to do anything? Can the computer refuse to do what you want? Of course the computer can crash. Does that count as refusing to obey your commands?
If you don't think the computer has the free will to refuse your commands, why do you think you do? Because your brain runs on neurons and the computer runs on silicon?
There are many ways to influence other people that don't have something to do with adjusting incentives. Just look into the psychology literature.
The ability to refuse needs the knowledge that someone tries to influence ...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.