Why are there so many mattress stores?
straightdope.com
straightdope.com
You cannot shake up the "showroom" because people want physicality. They want to lay on 5 beds before buying one.
You cannot make a cheaper showroom, as this industry is already doing that.
Best you can do is add digital services on-top of the cheap showroom and delivery model? But what value do you add?
No pushy salesperson watching you awkwardly laying on a bed in a brightly lit open room and 100 nights to test it out? Sold