BIL's wife has an estate liquidation business in San Antonio, Texas. She has pretty much closed up and only does certain sales. She has a leased warehouse busting at the seams with antiques and good furniture. She said this will be her last year in business as she has a hard time selling anything of value. Hurricane Harvey helped her business this last year as a lot of people were replacing damaged furniture.
Her home looks like a museum as it is full of antiques. Like others mentioned, no younger people want this stuff and us older folks (including yours truly) are stuck with our own load of it.
Indeed, we contacted two people we knew who had once had estate liquidation businesses and neither one of them is doing it anymore, because they couldn't get rid of any of the stuff.