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.