jackiedada, you've summed it up nice & succinctly ^

Most (though perhaps not all) airlines that have managed to survive the economic rollercoaster conditions of the last thirty years or so are now very disciplined when it comes to product segmentation, whilst also very conscious of the need to focus more than ever on their differing customer needs & priorities by region/market/route. And based on the various comments in the article linked by the OP, that's exactly what they're doing.......