Indonesians are majority
over-nationalistic people and always go home after everything is done. For example, many Indonesians too in Germany, but they will either go home after completing the degree or looking for a job in Germany and after that, they too will go home. The same also goes to Indonesians who are residing in here but decided to build a company back in Indonesia. The former technology minister of Indonesia was schooled in Germany, became a vice president of Airbus in Germany, developed new aerodinamic theories in Germany, but build his aeroplane company in Indonesia and bring almost all Indonesian senior engineers that are working for Airbus and Boeing back to Indonesia.
So most of overseas Indonesians don't have any will to change their nationality and migrate to other countries in large number, that being said, any possibility to create a permanent Indonesian community or neighborhood in a foreign country is almost non-existence.
The reason: You should hear the song Tanah Air (Motherland), that alone could make an Indonesian go back home.
Except in Netherland due to its past relationship with Indonesia, so I could always use a little time in Amsterdam and still speak Indonesians.