I don't think too many people prefer the concrete-and-wall environs of HK compared to the Victorian promenades of SF. However, we are all constrained by reality and scarcity. There is scarcity of space in SF. It must be alleviated by either increasing supply or suppressing/diverting demand. If supply is increased to a much larger extent, an HK scenario is possible which might decrease subsequent demand due to reduced aesthetic value. There are no perfect states here, and choices must be made. Restrictions can stay in place, however, no one should delude themselves into thinking that this isn't a cartelized capture of value by existing property owners in bed with the city council. It doesn't mean you can't support this option, but the reality must be kept in mind.