"... you can enjoy it in real life, rather than through your camera. Can you take your tripod down?... This isn’t a DVD, this is a real show, and I would really like you to enjoy my show because there’s lots of people outside that couldn’t come in."
There are 2 aspects to her logic, compelling in radically different ways:
1. Life should be experienced directly, and not through an electronic device. Be here now!
2. You are the fortunate ones, who got into this place, and if there's video of the concert, the excluded ones will have something of the feeling of being in here. Preserve the exclusiveness: Don't let the masses see what is yours!