Holy cow. According to this article, Vegas casinos might be resorting to having "table games... limited to three players for blackjack, six for craps, four for roulette and four for poker."
And I haven't even thought about what kind of "guards" they're going to use.. esp. on a Craps table. In addition, you can pretty much kiss any poker room good bye if there are only 4 players per table.