I can't personally relate, but I can see the business case for a way to fly with pets.
I have a coworker who kvetches about how she can't travel much because she's very committed to her dog, can't bear the thought of putting the dog in the luggage hold, and doesn't have anyone to watch the dog while she's gone.
At $6k this is obviously not the solution for the masses, but I could see a market for this at some price.