Practically, I would be content if prices of any single leg couldn't be negative. If leg A costs a and leg B costs b, the cost of A+B can be lower than a+b (you can offer bundles, discounts, etc.); just not less than either a or b.
If you play "tricks", the consumer has the right to use such tricks to their benefit.
Tell people to get off if the meal on the next leg is ... checks notes... a safety hazard.
First one is a "So what, just remove the American Airlines trademarks". They can drop them and say all good, and presumably not get sued again.
Second one is about what Skiplag was doing itself; I.E. cutting into AA's profits. If they continue to do this, the next court case will be much more expensive. Most courts don't like it when you get sued for something and treat it like the cost of doing business, and AA is big enough that I'd count on them bringing suit again.
https://www.nerdwallet.com/article/travel/travel-price-track...
https://www.youtube.com/watch?v=0_zWxdeq8F4 Airlines’ Secret Scheme to Keep Airfare Prices High
The poor airline, unable to sell an empty seat because ... checks notes ... the seat is already sold to someone, and that person decided not to show up. Truly the horror. Just think of all the revenue the airline lost because they couldn't charge more for a shorter flight and now have to fly the last leg with less weight
But it seems like the entire court case was mostly centered around the legality of the branding of the website. I guess overall the guy behind skiplagged will be happy to have gotten away with what amounts to 10% of revenue in exchange for a lot of publicity.