Depends on your definition of “success.” Countries such as Holland, France, Canada, Germany, and China all have caps on the amount by which a landlord can increase rent in any given year, usually by law it’s less than 5%, or indexed to inflation (but with 5% as the max). These laws are incredibly popular with renters and have been around for decades.
Berlin implemented a hard rent freeze in 2020 which was extremely popular with renters, but not with landlords, naturally.
Depends on your definition of “success.” Countries such as Holland, France, Canada, Germany, and China all have caps on the amount by which a landlord can increase rent in any given year, usually by law it’s less than 5%, or indexed to inflation (but with 5% as the max). These laws are incredibly popular with renters and have been around for decades.
Berlin implemented a hard rent freeze in 2020 which was extremely popular with renters, but not with landlords, naturally.
However, rent control isn’t just a hard price cap like back during the war, there are many nuanced aspects, see here for information: https://www.theguardian.com/commentisfree/2021/apr/23/berlin-rent-cap-defeated-landlords-empty