Apologies. It's my fault for the BA drift. I was merely trying to show that attitudes are changed and nobody will select an airline based on the rather basic (in my opinion) catering that U2's competitors offer and that the product differentiation is a lot more blurred that it once was.
I see no reason why a premium section won't work on U2. But with some of the highest load factors in the industry, maybe they feel they don't need to.