For the closed system scenario you describe above instead consider three people in a car. Fuel needs to be paid for. Now either the driver can pay for everything or through mutual co-operation the burden of cost can be shared. In this scenario if actor bob refuses to pay his share you advocate tazering him and locking him in the boot until he coughs up, as the only option. The normally prescribed method here is mocking bob for being a tight wad, assuming he can afford to pay and maybe not offer a ride next time, or else letting him off his share this time if he genuinely has money problems. Now you may also call this violence of state albeit mental, but I would call it social pressure for the greater good of the group.
This is actually a pretty nice scenario to demonstrate the difference between government and volyntarism, from which you may be able to derive better opinions on "morality."
Let's say in this scenario, bob lives near where he works, and doesn't actually need the car for day-to-day use.
In a volyntarist society, Bob will refuse to contribute to the gas, forcing the driver and other passenger to pay more, and will be forced to pay a much larger sum to compensate the driver on the rate occasions that he does need to use the car. Bob may decide that it's cheaper to only pay for the car when he needs to, or that it's cheaper to calculate how often he needs to use the car throughout the year, and make constant small payments to distribute his costs. Or bob, along with the driver and other passenger, may realize that the car is costing them too much for the little use they get out of it, and decide to switch to something else, such as two cheaper scooters, which the driver and the passenger can ride independently, and bob can borrow for a fee.
In a government/statist society, the driver and the passenger decide that the car is needed, and agree to force bob to pay for his share of the gas, even though bob rarely, if ever, needs to use the car. If bob refuses to pay, which he likely would due to not needing to use the car nearly as much as the other two people, they will claim that they are authorized to use force to make him pay, going as far as to keep track of all his finances, to see if he has the money to pay. Their justification for this will be that he can also use the car, should he need to, despite the fact that he is being forced to pay for way more use than he actually needs, or uses. As a result, Bob is forced to give up money for things he doesn't want, money that is in effect being "stolen" and used by others, and the car use remains fully funded, hiding the fact that the car may be way too expensive for what the "market" actually needs, preventing new ideas and vehicles from being used.
The last part is fairly relevant when comparing the rail and alternative transportation options of USA and Europe - In US, the roads and gasoline are subsidized so much (by forcing everyone to pay for them) that all other alternative methods of transportation are not able to compete. As a result, we are all forced to rely on driving everywhere, with no possibility of exploring other options like rail and public transportation.