You still want to even out the swings. Supply won't necessarily keep up in any given time or area. You aren't necessarily going to be able to supply enough hou

You still want to even out the swings. Supply won't necessarily keep up in any given time or area. You aren't necessarily going to be able to supply enough housing in the most popular spot were construction is hard and land expensive. Instead you want create equivalent areas fast enough. But without rent control all the affluent people quickly ends up in the same space, which is hard to make an equivalent of with affordable housing.