They will only be able to generate a limited amount of income from entertainment, media, law and academia. Yes, they will be able to import illegal aliens to their heart's content to do this type of work. And, yes, they will be more pliable and obedient than flyover America. For a while. But what then?
Or clean their pools, mow their lawns and trim their hedges, watch their kids, mop their floors, haul their garbage away (and where would they haul it?).....