Blanket statements like this is the point of many of the above replies, it’s not a true statement with evidence. All rent control does not reduce the number of rentals, “more restrictive rent control”[1] [2] does. These nuances are important in the conversation.
https://www.sciencedirect.com/science/article/pii/S105113772...
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4904928