Comment by Tiktaalik

It's not really the planners given that planners have no real power and just do what they're told. The problem is that the elected decision makers are beaten down by established rich homeowners and shy away from and all conflict. So we have a cascade of shy conflict aversion as lazy and uninterested elected officials defer endlessly to planners, and planners who don't want to cause drama for their elected bosses and get themselves fired capitulate and do the safe thing that the wealthy established homeowner class pushes for.