It seems like the amount of people that would take that mindset would be negligible, and overshadowed by the amount of people who are now excited and think your venue has great shows. As someone who works for a small venue, I wish someone filmed all our shows in HD and put them online.
But it's the Bowery Ballroom, it's not really a small venue...
It says right on their website:
"• Can I bring my camera?
Photo policy varies for different artists and is usually not determined until day of show. You can bring a nonprofessional camera to most shows, and you can inquire about the photo policy at the door or call 212-260-4700 on the day of show. If you are Mick Rock, please send us copies."