Trouble is they just do not see it is a double edged sword, put up the cost of a show prohibitively forcing them to cancel and you will see owners simply deciding to get out of the business and sell off their aircraft because the revenue stream that makes it viable to operate these aircraft by offsetting some of the costs by displaying them disappears, result,
Company owning the aircraft go
Company operating the aircraft go
Company maintaining the aircraft go
Companies supporting the Aircraft maintenance companies go
Air shows Go
Companies supporting the air shows go
And all the CAA REVENUE from all of those Companies goes too and I bet that amount will far exceed the £120K they are trying to generate through these new charges.
Plus all the jobs that will be lost, and everything that entails.