The numbers of small aircraft that visit big airports are miniscule.
The context of this thread is not necessarily "big airports". It is airports who have resorted to the use of handling agents who charge a lot more than the landing fee, just for taking the landing fee. This would include Bournemouth International Airport where I would have thought that GA visitors used to greatly outnumber commercial aircraft movements.
Now I would imagine, although I do not know, that the number of small aircraft visiting is miniscule BECAUSE of the handling charges applied whether you need the additional services or not. I am not complaining about that, it is just a statement. I believe that it was done in order to seperate the GA operation so that we didn't get caught up in the security required for commercial passengers. The seperate operation obviously has to be paid for.
It's just that I, like many others, no longer go there unless I have to and that's usually for technical visits where you don't pay it anyway.