Yes. There has to be some Casino's around the world that doesn't offer poker. The money Casino's make as TeUnit says above comes from Slots, Craps, Roulette, Blackjack and other table games.
Back when my province first got it's Casino they didn't offer poker. Poker didn't come for some years later I wanna say 3-4 years later but might have been 2 year. With no poker and in a province with a population under 1m they made plenty of money.
Casinos would do just fine without poker if they had too.
Cheers!!!