Laws about “must do so” will never be more effective than “mustn’t do so”. There will always be cases that the purchaser refuses to provide the required service, even if law-enforcing departments take compulsory measures. Cashing out every property purchaser has and still being unable to fulfill what laws have demanded, then there will be problems. Not to mention the potential coverage limit law-enforcing departments could have, and bureaucracy problems when dealing with those types of cases.
Laws about “must do so” will never be more effective than “mustn’t do so”. There will always be cases that the purchaser refuses to provide the required service, even if law-enforcing departments take compulsory measures. Cashing out every property purchaser has and still being unable to fulfill what laws have demanded, then there will be problems. Not to mention the potential coverage limit law-enforcing departments could have, and bureaucracy problems when dealing with those types of cases.