Amazing, supply and demand actually works! Someone should tell all the protestors who opposed construction of new luxury condos because they thought it would somehow increase rents.
Yes, rents are set by wages as you have to pay them out of your wages. Supply and demand also works for buying. Because central banks have ran with ultra-loose monetary policy since forever credit supply is huge and prices detach from wages. What a total mess these guys have created. Easy on the way down, chaos on the way back up.
Are you implying that there's some sort of grand-scale collusion on rent prices? If most rent takers think "hey, the median salary is X so I'll just charge X * 0.33" then what's stopping another rent taker from drastically undercutting that price?