As well stated. They have no choice. In the last 25 years purchasers have changed to the NOT one size but to pick and choose. Sometimes known as salami slicing or RyanAir pricing where you choose individual components and only purchase them.
The reduction in toilets, cramped seats and not much space for the increasing burden of hand luggage? The family of fa2fi sums it up.
Unless hundreds / thousands of lives are lost - in a very public way - and that it can be CATEGORICALLY PROVED to have been to a systemic problem with the 'densification' - then this is how it is.