I can't imagine the horror you felt when they wanted that beautiful real wood flooring covered with paint. WTF! and why would you do that? If you don't want to see the wood, then open the wallet and pay for carpeting already.
The home my husband had when we met was built in 1943 and had real wood flooring. He bought it in 2001; it had been rehabbed and restored. They did a beautiful job on the wood floors... but ruined it by painting over the equally-nice wood molding around the doors and windows. The windows were actually painted shut. He didn't care because he never tried to open them, fearing fresh air or something. Fixed that one day when he was at work.... muhahahaha. We ended up having them all replaced anyways in favor of modern insulated windows. Never did get around though to scraping off all that paint on the frames.
I'm curious.... did you see more, or less, business during the housing market collapse in 2008-2009?