My current city, Hamilton, is currently fighting with the Ontario government over this matter. The mayor is a regular feature on the local news and speaks to that often.
Their major push is for more density and resources for urban development. The provincial government has pushed for developing in Ontario's green belt and watershed instead. They've faced massive backlash over that to the point where they had to capitulate in some cases.
The current provincial government is the one pushing for downtown to be filled with parking lots and low-density housing developed outward. They're also responsible for nixing various transit and green power initiatives in favour of highway expansion. It's infuriating.