no, you buy seat with space for your legs, if someone is taking my space for legs he is taking something I paid for
they paid for space in front of their seat up to back of the seat in front of them
they paid for space in front of their seat up to back of the seat in front of them
but ok, let's stop being polite and charge people per kg of weight if we do this already with baggage, at least fat people will have motivation to stop eating, not sure what unhealthy i did that i grew tall and should handle ignorant people reclining seats
but maybe in your country causing unnecessary discomfort to other person is being polite...
but who knows, I don't fly with US airlines which are famous for quality of their service and maybe in US it is normal to side with person who wanna hurt others