I think its the fact that, as you say, they are running a business.
  And if its close to a race day and the fast group is full, they filter them down into the inters and even novice! 
 As i am a bit experienced, if someone shoves it up the inside of me, i wont (9 times out of 10) grab any front brake or panic.
 For the less experienced fast boys and novice, it must be very intimidating! 
 Still love doing them though
