I'm not saying rent control is an unalloyed good and yes it probably does put a cap on growth rate (though not cause economies to "stagnate", evidenced by many

I'm not saying rent control is an unalloyed good and yes it probably does put a cap on growth rate (though not cause economies to "stagnate", evidenced by many economically strong locales with pervasive rent control). Just pointing out that it's a trade-off.