That is pretty much what has happened. It is clear building more lowers the average. Keep in mind that homeless people may not have even been in "affordable housing" five years ago! Imagine how much better financial situation someone who lost their job last year would be in this year if they had been paying $1000 rent instead of $1400 for five years. Sure they would have spent slightly more in other areas - but they also would have saved more on average and have more fallback.