Thought I'd move this answer so as not to stray off topic...

If more could fly IFR it would be a great way of raising income

There are provisions in the Eurocontrol charter for charging VFR flights - it is already done (I think, somebody will know) in Italy.

The main reason it is not done, and the 2 tonne cutoff was established, is billing limitations. Eurocontrol's computer and staff could not cope with the volume if we were

a) all charged for IFR
and/or
b) all charged for VFR

Let's face it, the system creaks as it is. Any attempt to widen the net would probably break it.

VFR is definitely charged in Norway.

But then, flying in Norway visually is such a wonderful experience how could you begrudge them? :)