>>21017546100% of Indonesians that speak english are not even ESL, they are ETL (English third language). No one has Indonesian as a first language because some local language always takes that place (iofis first language is Sundanese, while for Ollie it's Javanese for example, see map). Then they learn Indonesian in school starting with first year in order to speak to other Indonesians not from their own teeny tiny language region. Then they learn English a little bit later in school.