If you have ever been to AXPONA then you know the listening rooms (hotel rooms) are very far from Idea. You will find almost every single vendor their using all kinds of room treatments and gizmos to counteract the boxy rooms with lots of reflective flat surfaces, the big windows, big flat TV’s, headboards attached to the wall, full length mirrors, etc.
Also most rooms are sponsored by a distributor or retailer, not individual brands. They want to show off all the stuff they sell, not a specific requirement of a particular piece of equipment.