If the RV industry goes into a nosedive in the future, it will be the result of parents not passing on the camping tradition to their children, and therefore a lack of demand for trailers.
There is nothing at all to indicate that the RV industry is suffering because of quality control. In fact, sales are booming. As more baby boomers retire, more RVs are sold. Sure it is possible that another huge economic downturn can cause many bankruptcies, especially since mergers have resulted in fewer companies controlling the market.
People come here to complain, but I would venture to say that most of us here are quite pleased with our RVs. I certainly am. I believed I've received good value for my money and have had many excellent camping experiences in my travel trailer. Did it have a few problems? Sure. I fixed them. Part of the ownership experience.