They make more money by catching the public unaware each Fall when the parking ban goes into effect. The city makes money. The politically connected car towing companies make money. The public be damned.
The amazing thing about this “revenue generator” is that people actually get their cars back although I understand that that is not always the case. Can you imagine getting you’re Porsche/BMW/Accura, etc. towed and never seeing it again? Now THAT could be a revenue generator for certain.