Don't forget about the screen. The bigger issue is that many people don't have room for a projector setup. Also, there's no effective way to rent a sound system

Don't forget about the screen. The bigger issue is that many people don't have room for a projector setup. Also, there's no effective way to rent a sound system as good as this. One complicating factor is that it sounds like you have to get these fitted/personalized for your vision or glasses. That would be a buzzkill. Same for battery life, if everyone is reaching for a power adaptor during the third quarter of the Super Bowl.