The problem of why Chinese have more large companies than native is because of so many aspect, like religious and cultural. Native are less ambitious so they are content with what they have got. Some of my family are business people and the most successful one also dont have large companies, he is content with what he got, his life orientation is more on spiritual and has build a mosque behind his home in a strategic area in Bogor, West Java.
According to my friend who is working on bank, most loan are given to Chinese Indonesian, it is because Chinese is more ambitious and risk taker. Yes, Chinese Indonesian contribution are great in our economy, it is something to be appreciated rather than mocking the Malay or Javanese.