Sportsmobile has been converting vans to mini RV or camper van since 1965. Someone recently got a guided tour of the factory by the owner and here it is.
https://youtu.be/p3X9UjNx9g0?t=123
He said there were about 100 vans at the factory at the time, in various stages of conversion. And they were sold out for 14 months.
Near the end the owner shares stories of some of the customers. Some are professional nature photographers/athletes (?) who must stay outdoors for days, and need clean/dry place for equipment, eat/sleep etc. Having the van saves them much time required to travel to/from hotel to their work site.
A lot of employees of Google/Apple also are customers of Sportsmobile.
And some are even medical residents who basically need a place to sleep between shifts and choose to sleep in a camper van, parked at the hospital parking lot.
So camper van is not just for people who want to travel for the sake of travel.
I would love to have a camper van at my disposal so that I can go explore some popular sites like Yosemite, beach campsites etc. But $100,000 is big money.