I think people ( enlightened people ) more and more are discovering the benefits of a foam trailer , over those heavy , rot prone pricy beasts of the past ... RV's as we know are prone to fall apart and are a big "money pit" ...that and with questionable warranties , and overly pricy repairs from "dealers"...

That and cars are getting smaller and unable to pull a 4000lb+ Box, which is overloaded from the start (Just Too Heavy) .
And not to mention my Foamie has sat
Outside for a decade ( through storms and now multiple hurricanes yearly )without needing any major repairs that I couldn't handle myself ...

Try that with a commercial trailer ...
No , Foamies are not dead , not by any means ... Just many people have yet to discover the benefits and practicality of a foam trailer ..

At this time , a decade later , I've only invested about $2000.00 in my trailer ...That breaks down to $200.00 a year for the peace of mind knowing I have a trailer ready to go , should I need it ...
