We’ve largely done this to ourselves. The cheapest price is king in air travel. Unless you’re traveling for work, everyone goes for the cheapest option, so airlines are incentivized to get the base price as low as possible. Like if the option was to pay $100 more and get 2 checked bags, a meal, and more legroom, I’m still not going to do it.
The price of air travel has come down astronomically over the past few decades.