Airlines are subject to enshittification just as all other things are:
• Diminished airline status returns
• Increasingly large/overpriced shops/restaurants
• More discrete seat/class upgrade costs, worse experience for base fare overall.
• Higher security friction
• Explosion of travel cards that overload lounges
• Increased nationwide traffic so even the drive to the airport is worse
• Costs of food purchases on plane (in the 90's any transcontinental flight usually had a free meal).
The only things that have gotten better are wifi and entertainment to act as recompense for less leg room.
The only things that have gotten better are wifi and entertainment to act as recompense for less leg room.