What this consolidation will allow is for brands to shrink or be absorbed. The observations that the build and components for most of these rigs are the same is fairly spot on when you look at similar price points. My Sisters Jayco trailer and my Forester have the same appliances, AC, staple and glue construction methods, plumbing, water pump etc etc etc. However, my Forester has held up much better due primarily to the after purchase support from the factory and my own two hands. CW of Garner NC messed their camper up badly when they worked on a soft spot in the floor and botched the flooring install twice and left multiple plumbing connections loose after the third attempt at the floor. First time out my brother in law had an unwanted fountain in his bathroom that flooded the camper in minutes. We all know how well water and campers mix... I voted with my wallet and so has my sisters family after that last fiasco. We use dedicated repair services or our own two hands for repairs. My next RV purchase will involve a whole series of inspections and will likely cost me over a grand to get the plumbing, AC, electrical, chassis and structure inspected by licensed contractors and not the service bay at the dealer. I'll still do a walk through but those inspections will serve as my extended warranty. I won't trade or sell my known good rig until I find one that passes muster and I won't touch a rig that requires dealer repairs before purchase. What is that phrase... money talks and ..... Well if the quality is low at time of purchase I might do a lot of walking.
Larger manufacturers have the ability to flex their volume muscles and require higher standards on return and mean time to failure for the parts they purchase. They also have the ability to save .001 per fastener by switching from 1 inch staples to lighter gauge 1/2 inch staples. Time will tell which route Thor takes with Jayco but I can tell you that when I pulled down some trim to replace a camera in my forester I was dealing with 2 inch staples. I can't speak for the entire company but I can say that the parts that FR had control over on my rig have held up quite well over the past three years following my initial roof issue and they fixed and reinforced that roof free of charge. Kudos to everyone I've had dealings with at FR. I'm one of their supporters and that support was earned by the people I've dealt with and not based on what I've read. If you have a question about the dedication these employees put behind the support of their product I would strongly encourage a trip to a FROG rally. I have had dealings with Thor and that's one of the reasons I own my Forester now and one of the reasons my sister is looking at FR products for their next rig.
BTW the automotive world has a similar problem with a lack of selection for suppliers. If you doubt that statement google "airbag recall"