They're going to find out very quickly how tiny of a market it is.... I can understand a hockey team moving there, considering most hockey arenas fit 15-20k people.
Will they be able to fill a 75k seat stadium consistently? I have my doubts, unless they're banking on lots of tourists buying a ticket just for kicks.
The only way I can see this work is if the NFL is counting on a large influx of fans of the visiting team who are going to see their favorite team on the road as an excuse to go to Vegas.
If that's the case, Davis better never complain about how the locals don't support the team when the Cowboys and Steelers fans outnumber their own fans 2-1.
Unless they line the concourse with slot machines, I don't see how this is going to work.