I will say though, with the exceptions of EK, EY, QR, and SQ, I generally find there to be no correlation between the quality of the cabin product and the fare.

That's an interesting take on it, though, pbarnette. As it stands, I'll take all the extra frills they want to throw the way of J travelers, since it remains the lowest class of service with a bed, so companies who currently pay for it will continue to pay for it by that token. I think the "business class" you're talking about is really premium eco: pay $500 more, get enough elbow room to work on your laptop and enough legroom to continue working on said laptop without risking DVT.

Anyway, none of these airlines are so profitable that I think they're price gouging on premium cabins.

That's a great video. When you watch it carefully, though, you realize that, on it's base, the only hard difference between the AF and DL lounges are the food. However, all AF's small touches are what differentiate its lounge—in this case the tree motif, from the actual tree, to the tree-like lamps, to the leaf light feature on the wall (AC actually has something similar in their YYZ international lounge; it's very nice)—things that DL wouldn't even think of. Or, almost worse, Delta might put in one tree or one water feature or something unusual and potentially out of place in a freshly renovated lounge (I'm thinking the observation deck at JFK T4) and then play it up as "OMG GROUNDBREAKING: TREE IN AIRPORT", simultaneously sucking any "luxury" out of said tree with their inelegant tree presentation and distracting from the fact that the food in the clubs still sucks. But, in the meantime, at least DL still has the best open bar of the U.S.-based airlines' lounges.

Ten points for this. ^