A reasonable argument as far as it goes.

However, it still doesn't solve the problem of how to enforce that morality where it seems that other people aren't following the rules even when they signed up to them.

eg. In the trolley problem, the logical choice for anyone who values their own freedom is to do nothing.

Why? Because to prosecute the person who does nothing, you'd have to jump several major hurdles.

a) The person is even aware of the problem. Being oblivious isn't a crime unless it's literally their job to be aware.

b) The person knows that the switch exists and how to use it. Trolley switches have a device that stops accidental activation.

c) The person would have been able to use the switch in the amount of time available, including shock time.