[Kye]

The more typical use case involves background TV running in multiple rooms. Much of what Netflix licenses and produces is made for this.

Recently: "Casual Viewing – Why Netflix looks like that" https://news.ycombinator.com/item?id=42529756

It's easy to blow past four with a screen, not necessarily a TV, going in every room.

[formerly_proven]

Are there that many people with deep-fried brains like that?

[Kye]

Some people just do better with ignorable vibrations in their spaces.

[datadrivenangel]

It was a staple of the 90s/20s.

[danpalmer]

Even if we take a family of 4 as an example, who are at most 1/3rd of Netflix's user base according to another commenter, that means having 4 TVs/PCs, all on at the same time, and all with Netflix playing. That seems like a real edge case at the fringes to me, not least because it would necessitate no one in the family being together.