Wonder why, really. But apparantly people in Indonesia don't like fizzly softdrinks. 

Sweet tea or coffee is the traditional accompaniment to Indonesian food, and Sosro, a family-owned business, first thought of bottling jasmine tea in the 1970s because so much was being spilt while being transported in big pans along the country's pot-holed roads.

Sosro, founded in central Java in 1940, is now the biggest soft drinks manufacturer in Indonesia, making other drinks as well including the wonderfully named Happy Jus.
Many international rivals, including Coke, have tried and failed to knock Sosro from its top spot, but Indonesians are still loyal to the local brand. "Many Indonesians don't like the bubbles in soft drinks," London-based Indonesian journalist Emilda Rosen explains.

Source: Monocle.com