I think the service would be more suitable for people who have unused spaces at home and can dedicate the whole room to make a home cinema there. You can buy a large TV at an electronics store, simply place it in your living room and watch Netflix, and, additionally, anything you want. Super-sized TVs or screens (e.g. throughout the entire wall), which, I assume, the idea is about, may not be desired by many because you need a lot of free wall space for it and they are not very convenient for everyday use (e.g. browsing the internet, playing games, watching TV), they'd be most suitable for home cinema experience from time to time.
All the examples shown in pictures used in this session so far, including the cover image of the idea, are home cinema rooms. The company would install the screen, the sound system, chairs, adjustable lighting, etc. The users could test the system on-site while it's being implemented and adjust the gear according to their needs.