This inevitably results in window and aisle seats being filled quickly, and nothing remaining (within that section) but middle seats. And because corralling ch

This inevitably results in window and aisle seats being filled quickly, and nothing remaining (within that section) but middle seats. And because corralling children (even teenage children!) is much harder than just getting up and walking on yourself, this results in families almost invariably having to either accept being spread across separate seats in multiple rows, or being pushy about trading seats with exactly the kinds of people who have aggressively made sure they get there first.