Agreed. It represents a trending technology use in mainstream culture. It's these kinds of little events that can lead to brilliant start up ideas. Let's stop being such pretentious 'hackers'.
I sense a tongue being held firmly in your cheek, but I'll play to it. There are at least a few ideas in here, if the video is representative of a trend (that has yet to be determined) or boom area.
One off the top of my head: Provision of camera and interactivity systems for concerts, so remote fans and musicians can interact better. Imagine if Folds could get 50,000 fans worldwide paying $10 to watch a gig with more interactive elements like this.
I think you're overly optimistic about what's going on here and
overlooks trolling. I don't know if the video was edited to not show
the offending ones. But I'm pretty sure if this becomes a popular
trend, you'd have to deal with more trolls than you'd like to.
Maybe you're right and there's some hidden potential behind all of
this. But the cynic in me just imagines 4chan members drooling at the prospect
of ruining a show with shocking images and videos.