Why Moutai is so expensive?

Can you explain to me, in simple terms, why the price of Moutai, a type of Chinese liquor, is so high? I've heard it's a prestigious brand and in high demand, but what are the specific factors that contribute to its expensive price tag? Are there limited production quantities, or is there something unique about the production process that drives up the cost? I'm curious to learn more about the economic and cultural factors behind the high price of Moutai.