tstk, clearly you don't do airshows then.
The men on little ladders amount to a few hundreds nationwide, maybe low thousands. They even have their own magazines and B&Bs.
Airshows OTOH pack in from 1600 to 50000 or even 100000 per day.
At £12 per pop an airshow would take £1.2m. Now tell me just how much would a man on a ladder pay?