Eric Clapton breaks the string. 70th Birthday Tour. Royal Albert Hall, M...

The Art of Stadium Seating. 
It's priced so that the Ultra Fans get to see the Eric's high string break. 
No one who received tickets from work noticed a thing. 

Haters are usually in the dark back of the room. 
They usually will not blow so much money to boo a string break from the front row.

TL;DR.
Lovers of Music will pay top notch to see the little mistakes that make the Artist who he is.
Playing Perfect is Perfect Playing that doesn't exist.