How likely would Paul McCartney do a Las Vegas residency?

I know he said he wouldn't do it, but after what I've just heard today (of the Backstreet Boys making bank from their residency this year), I think he'd change his mind.

At first, it was a great idea, with Sinatra and the Rat Pack, along with Elvis, performing in Vegas far back in the day, with incredible numbers.

Then for some reason, it became a place where musicians went to die.

Then only in the last 20 years had the idea rejuvenated successfully, becoming incredibly profitable locally as well as for the performers themselves - Celine, Britney, Elton, U2, Bruno Mars, Garth Brooks, Gaga, the Eagles, J-Lo ...