That's a strawman of the request, not the request. The request is that, same as anything else in a proper Free Market, the price includes all costs and internalizes all direct risks. I'm paying $XYZ to be delivered from point A to point B on a given date with a ~roughly given time. I don't expect there to never ever be trouble, that's life. I do expect them to take care of all trouble however, as I am in their care. If they create a need for a hotel stay, then they should pay for that. If they lose luggage, they should pay for that. If they have to reroute, put me on another mode of transportation, or whatever, that should all be their problem. And if they can't deliver reasonably appropriate service they should partially or fully refund the purchase.
This is critical to a functioning market. If Airlines Alpha & Beta both have a incident rate of 0.5% but Airline Omega has an incident rate of 4%, what should happen is Omega has to compete or go out of business vs the other two (and then someone new comes in and gets the assets to try a different approach). Maybe they save enough money over that they can offer lower prices anyway, or have high enough quality or unique offerings elsewhere to charge a higher price, or accept even lower margins, or some combo. But what cannot be allowed is for them to externalize that onto the public, because then the prices are fraudulent and no longer comparable between competitors. The market can't respond if the pricing signal gets muted. Unsurprisingly lots of players would love to be able to advertise a lower price not through actually earning a lower price but just socializing costs, but that's not ok.
>But let's be real, their slim margins cannot support bonusing out every passenger with a sob story about getting delayed.
Horse baloney, margins have nothing to do with this. Every airlines can and should be held to the same standard, so it's just a universal cost same as jet fuel. They're all in the same boat so long as they perform the same. If some airlines have much higher failure rates then others, then yeah they're going to have to address that somehow and that's exactly how it should be! Normal adult businesses deal with this via prevention, insurance and buffers, it's simply a cost of doing honest business.