The housing crisis was decades in the making and will take decades to solve.

Uh... no? At least, there's no reason to think so, and places that actually tried have seen more immediate success than that. And in any case, those decades of work need to start happening now and they're not.

so no party is ever going to purposely crash prices.

Then there's no escaping the far-right. By definition you can either have affordable housing or high prices, and the lack of the former translates directly into free votes for the far-right ("kick the immigrants out so we can have houses" being the obvious pipeline).

For anyone under 30, the Liberals have been in office for their entire adult lives. Every difficulty in their lives is coloured by the fact that the Liberals were in charge, whether or not it was something the federal government could control.

Given the vast power of the modern administrative state, the lack of a serious attempt to solve problems says more about the person doing the solving than the problems being solved. The point being: A good majority of the difficulties in their lives ought to be coloured by the fact that the Liberals were in charge, because clearly they weren't and aren't doing a terrific job.