I would suggest that the economics of the Mardi Gras and the pink dollar are somewhat exaggerated.
I don't really think the economics of the Mardi Gras is that relevant but the pink dollar most certainly is.
Visit a Gay locality and check out the restaurants, clubs and real estate prices and I think you will be surprised. I know of one that I certainly couldn't afford to live in. These people also travel a lot more than I do.
But that's not really the point, is it?
No-one bats an eyelid when airlines sponsor and promote sporting events or sports teams. Makes good marketing sense, yes?
As soon as they sponsor or promote something we are bigoted against, we all start searching for reasons why they shouldn't!
For goodness sake, it's a rainbow coloured logo. It's hardly a half naked raging queen painted spawling along the fuselage....