Well.....
It would sure make money on the Narita or Las Vegas runs, no question there. Probably cheap as hell, too. Get a good deal on a few beat-up A380s as compensation for getting jigged out of both the 350 and the 330NEO 800 models when Airbus backs out of both. AB did bring a demo 380 by a few years back. Some of our management pilots got to go out and fly around in it, sounded like they had a blast. That was obviously just a demo, no overture towards sale.
I mean, where the hell would we park it? There is only 1 or maybe 2 gates at HNL that could even handle the plane, and the 2 adjacent gates are useless while it is parked there (QANTAS diverted theirs here a couple times for medicals). There NOWHERE to park the damn thing overnight, either.
A man can dream.