Not enough of Vancouver is zoned for middle density housing. If you opened up the zoning for Vancouver, you'd see the construction trade in Vancouver expand and more middle density constructed throughout the city, instead of limited patches of high density that can only be constructed by a limited set of developers able to get financing for such a huge project.
Here is the zoning map of Vancouver, 80% of it is zoned for low density development and this is the root of the problem:
https://i.redd.it/xy30s6tayvo91.png
Here is the zoning map of Vancouver, 80% of it is zoned for low density development and this is the root of the problem: https://i.redd.it/xy30s6tayvo91.png