I wonder how this holds up in areas where there the majority of rentals are owned by a single company, or landlords collude to artificially drive up rental pric

I wonder how this holds up in areas where there the majority of rentals are owned by a single company, or landlords collude to artificially drive up rental prices by keeping units vacant [0]. [0] https://news.ycombinator.com/item?id=33317414 https://news.ycombinator.com/item?id=33317414