Although I'm pretty happy with my own unit, the Class B niche is a small part of the RV market. I don't think the industry is in a death spiral, but from reading this forum for more than a decade and talking to other RVers, I think there is the potential for significant market disruption. The widespread quality control problems are similar to those that plagued the Big 3 automakers in the late 1970s & early 80s, when Detroit & the UAW acted like they had a near-monopoly that could pass along higher prices and lower quality without consequences. Japanese & European competitors cleaned their clock by offering a better product, and it took quite a while for the domestic manufacturers to get their act together.
I'm not sure how many RV makers are positioned to benefit from better quality control, but it's almost certain that a failure to do so will sooner or later cause Lemon Laws and/or other consumer protections to be extended to RVs, while customers eventually vote with their feet and gravitate to those that produce better products.