If developers were allowed to build, Toronto, Melbourne, Sydney & Brisbane size towers, as long as they also built some commonly affordable rental buildings, that would be an incentive. Sure, developers can build sky-high in Dubai, NYC & Chicago, but that's usually just for luxurious condo suites.
If developers in Vancouver & BC in general want to build much taller towers, they should also build a lot of low to mid-rise commonly affordable condominiums & rental units. Thus, by doing that in tandem, would allow them to build, Toronto, Melbourne, Sydney & Brisbane size towers.
Unfortunately, unless the very strict Vancouver height limitations are updated to proper big city standards, semi-tall luxurious condo towers will be built, but with no incentive for developers to build a lot of affordable housing for a much larger market.