I don't regard anyone who demands value for money as absurd. They are perfectly entitled to expect value for money, but only if they are prepared to use the other part of the customer's bargain and withdraw their custom if they don't get it. If they refuse to do that, they have no right to expect anything other than to get screwed.
As for your monopoly argument, it falls down on the basis that the monopoly is emotional and imposed purely by the customer on him- or herself. It's voluntary and imaginary, not imposed or real.
Now if you argued that the mere act of going to the football - that physical act of belonging - is actually what they're paying for, then you'd have a better case. However, if you accept that, then there is no way of defining what 'value for money' means in that context and thus no grounds for customer complaint as long as the club keeps letting them in.