Highly unethical to expect people to follow the law? We're not talking acts of civil disobedience against unjust laws, we're talking willful abuse of laws designed for public safety.
City streets are not the campus facilities, and what of the people using public transit or other means of transportation? Should they have to pay additional on their tens of thousands to subsidize those people with cars?
It is transparently using the enforcement in a predatory way. Their goal clearly isn't to keep the parking enforced or they would have done it from the start or at least after move in times. That is what is highly unethical - they deliberately let the /problem start/ for profit.
They aren't the law either any more than Jimmy's Pizza place is when the call to tow a car that was abandoned for a week.
City streets are not the campus facilities, and what of the people using public transit or other means of transportation? Should they have to pay additional on their tens of thousands to subsidize those people with cars?