Most people I know what watch movies at home do so with distractions. They have their phone out seeing tweets and other notifications. They might have a spouse or kids or guests. They have snacks and drinks. All of those seems like it makes movies in VR likely to be a novelty for most. I'm not saying I won't try it. In fact I have tried it. But so far it hasn't been worth it. Maybe during a plane flight.

PS: Yes I get you could integrate the notifications stuff into VR. In fact if you want to get silly show a virtual tablet on your virtual coffee table in front of your virtual TV. Replying though will be an issue, at least for a while.