In many California cities at least, you can connect all of the rent control measures in the late '70s to significant downzonings which occurred in the previous decade or so. I wonder if it could also be be considered a factor which contributed to the passage of proposition 13 in 1978.

https://www.lewis.ucla.edu/programs/housing/housing-supply/z...

edit: So I actually consider rent control to be a result of low housing production rather than the other way around. Associate Professor Shane Phillips from the Lewis Center (linked above) also considers rent control to be a very reasonable policy as long as there's plenty of realistic zoned capacity for more housing. Everyone is always arguing that if we build more then that would keep rents from rising so why not have rent control anyway then?