I'm sure it's nice for you to have a chat with Gibson but it is not a consultation, or even dialogue, if he's already made his mind up before meeting you. It's a PR exercise to get someone else to do his dirty work.
"We're raising prices because we can get away with it" is all he is saying.
The demographics of the country are 18% U18, 19% O65 and 63% the rest. If his ticket sales are only 50% at the 18-65 range then it goes to show that the ticketing model that people have been defending isn't working.
There's no way they are only taking £12.50 per ticket after VAT. They would be a £15 average ticket price and even with concessions it's nowhere near that.