[1] https://www.scientificamerican.com/article/psychology-of-tab...
It's been like that for centuries. Healthier food costs more than unhealthy food. That's why poor people have a lower life expectancy than their rich counterparts.
You seriously think all people are equal and/or should be treated equally and/or should have equal outcomes? Ha.
I don't get this. The cost of a stir fry with rice or a pasta with fresh sauce is going to be less or close to any processed meal and the preparation time is of the order of 15m or less.
Are fresh vegetables insanely expensive where you're from?
Airlines are in trouble because they can't run as many flights and they have significant fixed costs: leasing planes, servicing debt, payroll costs. Not because the flights they do run will be less full.
Additionally, I don't think you understand how airlines buy gas. This will help: https://oilprice.com/Energy/Energy-General/Why-The-Oil-Price...