I eventually tracked down the report which you were kind enough not to link to.
You seem to be claiming that you can put arts in, and get money out. If this was the case we wouldn't need to subsidise arts. But we do. You put money in, and out comes the arts. At the top end, with the big museums and big galleries, yes, they make money. The local stuff doesn't, which is why there are local council grants.
I'm quite happy to accept the argument that the arts have value, but they have a financial cost and denying that fact doesn't help the case for supporting them.
Metebelis3
Noble - I suspect we have a shortage of physics and maths teachers because physics and maths graduates (like myself) are preferring to do something other than teach not because there aren't enough of them. Physics and maths teachers, like all other teachers, aren't paid enough.
This useful European Union study (handy to have sources) indicates that gross salaries for teachers in the UK are amongst the very highest in Europe. Only Denmark, Finland and Germany pay more. Our standards, of course, remain woefully low. In Finland primary school teachers are required to have a masters degree, whereas here they...aren't.
It's not the money.