Well, this does get serious attention, and not many are laughing.
Glen Korstrom in Business In Vancouver takes on the topic of re-zoning in Vancouver’s notoriously exclusionary single-family districts, and elsewhere in the Metro region.   He quotes Anne McMullin, CEO of the Urban Development Institute Pacific Region and Tsur Sommerville, director of the UBC Centre for Urban Economics and Real Estate.

Metro Vancouver municipalities’ failure to convert single-family zoned neighbourhoods into areas where developers can build multi-family homes is being criticized by the development industry’s association, the Urban Development Institute Pacific Region (UDI). . .
A new plan that provides for a loosening of single-family restrictions across the region would be good for consumers and developers, [McMullin] added.
“Right now, [municipalities are] trickling out the available land, so the land becomes expensive for the developer and we’re not creating any competition for the buyer,” she said. “It’s being done one building at a time.”
Tsur Sommerville . . .  agreed with McMullin that rezoning wide swathes of single-family-zoned land across Metro Vancouver is a good idea but he does not believe that it will happen in the short term. . . .
If there were to be a broad based change to single-family zoning across the region, Sommerville thinks it will most likely occur because the initiative has the support and pressure from higher levels of government.
That would disperse the political wrath against the municipalities which have to enact the change, he said.
“From a housing supply, housing affordability perspective, [rezoning single-family neighbourhoods to allow for more density] is what has to happen,” said Sommerville.