Absurdly Driven looks at the world of business with a skeptical eye and a firmly rooted tongue in cheek. 

To many airline passengers, some things are sacred.

Change them and there'll be ululations. Or, at the very least, mutterings of discontent.

Perhaps that's why Delta Air Lines hasn't made too much of a hullaballoo about a little change it's making, starting December 1.

I hope you're sitting comfortably and not, I don't know, flying a plane or something. 

You see, Delta is raising the prices of its alcoholic drinks by one whole dollar.

Craft and imported beers, wine, liquor and cocktails are now $9. Yes, for those (wisely) tiny pours.

Of course, this only affects those who pay the least (hopefully) for their seats. The long-suffering Economy Class passengers.

Those in more advanced cabins -- even the oddly-named Comfort Plus, which is just the same seat with a little more legroom -- get free drinks.

In Economy, however, you have to pull out your credit card in order to numb yourself a little from the people seated on either side. 

Oddly, Delta has been slow to raise its prices. American and Southwest have gone along with the trend.

I should add, though, that drinking on Southwest is still a bargain. A glass of wine, for example, costs merely $6.

Sometimes, the effect of such price rises is psychological.

How many Economy Class passengers will suddenly trade up to Delta's Comfort Plus, just to get a free drink?

Conversely, how many will resist buying a drink at all, resentful that the price has gone up?

Perhaps the majority will just accept it, allowing their need for a drink to overcome any resistance.

There are, though, two odd aspects to all this.

One is that United Airlines prices appear to have held. Its wines and spirits -- and craft beers -- are still $8. Might that be a reason to fly United? (No, I'm not entirely serious.)

The other curiosity is that Delta isn't raising the price of its sparkling wines. They're still a sparking $9.

Would Delta secretly prefer even Economy Class passengers to quaff (quasi-)champagne?

Now wouldn't that be good for its slightly snootier image?