Yes. It is a small market, diesel pusher price points tend toward a market of retirees spending value of a home on a home on the road, but manufacturers have a few offerings for families with more to spend.
At the right price, $500,000 to $2,000,000 (and up) you can have a coach built to meet just about any need. I've been in touring coaches with as many as eight bunks, seating for that many people, small kitchen, toilet and shower, fit into 45 foot with no slideouts. But they weren't really RVs, paid for themselves by allowing the roadies to sleep while the show was on the move to next town.
