Interesting. In the late 1960s in Australia a classifieds-only paper called the Trading Post grew and absolutely dominated this space by the 1990s. My Dad would buy it every week to look for bargain junk, cars, etc. I'm sure the main newspapers took a hit because of it. They had local versions for each region. It was eventually bought in 2004 by Sensis (they were part of the main telco Telstra) for $636M which also owned the Yellow Pages with the intent of going online. It totally bombed and is surplanted here by Gumtree (now owned by eBay) and FB marketplace. https://www.theage.com.au/business/sensis-confident-of-onlin...
I will never be able to look marketplace or even Craig's list without wondering whether the great Australian joke about buying jousting sticks from the trading post would work in their place.