The progressives of the Board of Supervisors introduced this. To my knowledge it isn't the moderate members. Perhaps its crony capitalism, perhaps its something more sinister - this plays into the local anti-tech narrative.
Whatever it is, it isn't addressing the important basics to improve our quality of life.
Except it's actually an example of crony capitalism gone...well, perfectly according to design, actually.
There's nothing even remotely progressive about restricting all other businesses just to boost business for a particular industry.