I'm surprised they don't want to stick it out in the East Bay.
That *region* as a whole has practically unlimited money. Plenty to support two teams. Santa Clara is more San Jose than San Francisco, too, for that matter.
They would be closer to the heart of it all near I-880 in Alameda County.
Just when housing prices/rents are starting to push even the super rich off into the East Bay and that place is going to gentrify hard... then they leave.
Las Vegas has lots of glitz but it's small and its "town" population isn't particularly wealthy. Lot of military people, actually, pretty conservative place outside of the dens.
It would be odd to see an NFL team whose business model was being a destination city for opposing fan bases to come see their team play the Raiders, stay a few days to enjoy the city in the typical fashion, and then go home, drawing what they could locally.
Not exactly like the Bills or Lambeau, say, there. Not sure how well it would work.