Monopolistic force isn’t enough. To be able to enforce, you need to be able to detect the wrongdoers. You need to be able to provide sufficient punishment to motivate people into obedience. Even then, you will still get the odd crazy person breaking the rules.
Some potential rules, like “don’t specification game this metric” are practically unenforceable. The soviets didn’t manage to make the number of goods on paper equal the amount in reality. It was too hard for the rulers to detect every possible trick that could make the numbers on paper go up.