Comment by wayne

It might be a fad, but the current trend in US public aviation is increasing premium cabins and premium revenue: https://simpleflying.com/why-us-carriers-doubling-down-premi...

This is the reason Delta and United and doing well right now and Southwest and the LCCs are struggling.

It wasn't true just a few years ago, but if this continues as a trend, I could see an airline sacrificing fuel efficiency for a dramatically improved onboard experience.