I'm absolutely in no way qualified to interpret results, but it seems like in Western Australia we've had a similar policy since the 1990s, where the WA Housing Authority put policy in place to ensure that no suburb had more than 1 in 9 houses dedicated to public/government housing.
https://www.watoday.com.au/national/western-australia/the-su...
That said, there's been some notable kerfuffles when "rich" suburbs didn't want their allocation.