I can't say for sure if this is what Foobarqux was referring to but this article https://news.ycombinator.com/item?id=11708873 came up a couple weeks ago which states

> Tim Redmond of 48 Hills has argued that building more housing would make the problem [high housing costs] worse because the people who would move into it are likely to be wealthy newcomers whose demand for services will increase low-income employment, putting further pressure on older, lower-cost housing.