Why no Bahasa Indonesia?

Why no Bahasa Indonesia?

On July 4, 1995, I was flying with Japan Airlines Flight JL725
from Narita-Tokyo to Soekarno-Hatta in Jakarta, continuing to
Denpasar, Bali. The inflight announcements during the flight were
in Nihon-Go, English, then Chinese, but none of the announcements
were in Indonesian. I should admit that it was my first time
flying with JAL this year.

I wonder whether, in the airline industry, it would be better
to have inflight announcements in at least the languages of the
country of embarkation and the carrier's flag country plus the
country of destination, especially with JL725 where every
destination was within Indonesia.

PETERS M. SIMANJUNTAK

Jakarta