[Kirby64]

> If you are rich you have single-use rooms.

Yes, you might, but you can also have normal multi-use rooms. It's not like being rich somehow makes a 'standard' living room configuration with TV and couch gauche. The likely main difference is the couch is going to be way bigger and the TV is probably 100" inches.

Theater/cinema rooms are a very different experience (lights off, dedicated to watching the thing) compared to a standard lights on TV experience. Two different purposes.