So what's the upside to me, a homeowner, in supporting a pro-development council/lor? Lower property values, more traffic, more demand on recreation infrastructure, roads, hospitals...
As a homeowner there is not a financial benefit if enough housing gets built to lower values. But most eligible voters in are not home owners.
Higher density in the core increases the amount of local services and such close to where you live. It also improves the environment. More housing units will also reduce the property tax burden for everyone.
High house prices means your kids will have to move to Moose Jaw or some other place like that to be able to make a living and have a place to live.
When there is a problem with housing affordability, the community develops a bigger and bigger gap between the rich and poor. When this gap is created through an artificial manner such as high house prices and not created through work, the social contract of the community begins to fall apart.
More people will mean better public medical services. The BC Cancer Agency for Island is in Victoria and not Nanaimo because we have the population here. In 30 years it is realistic to have the Ladysmith to Comox swath of the Island to have more people that the CRD. At that point it makes sense to shift healthcare up island.
Finally, homelessness in Victoria is driven by high housing costs. We have very few places available to be rented for the welfare shelter allowance.