Only if it changes. I think the point is that if people are buying under current zoning, the market has already spoken. As such it becomes weird when people want the market to handle things, but not if they don't like what the market is saying.
The former is much, much larger. The latter is more like 2 wolves and 1 sheep voting on who's for dinner.
And never, never forget that a lot of zoning and land use regulation was basically created to replace outright racist policies like redlining.