It's the difference between television and the cinema, or a driving game and driving for real.
Perhaps it's less true for orchestras, but I have exquisite recordings of chamber music, and I will still pay to go to live performances.
It's different.
Have you seen the Berlin Philharmonic's Digital Concert Hall? http://dch.berliner-philharmoniker.de/
Oh you mean the Classical Music business. Yeah, it will, because as RiderOfGiraffes says, no recording can capture the ambiance or immediacy of live performance. On top of that, few great concerts are recorded. They could fix that if they wanted to: you can go to archive.org and get decades of Grateful Dead concerts.
Will the diamond-encrusted concert halls with their $150 tickets to hear old warhorses over and over survive? No. At least, not if the middle-class keeps getting decimated by our Great Leaders.