The Dutch East Indies definitely had to be controlled by Arthur, but he did not want to take over the tens of millions of indigenous people in the entirety of the Dutch East Indies.
This also meant that one of the three large islands, Sumatra Island, Kalimantan Island, and Java Island, had to be relinquished to accommodate the indigenous population of over 30 million.
Arthur had considered expelling all these indigenous peoples to Africa or other regions, but the problem was, which area could accept tens of millions of indigenous people?
Apart from their own territory of Australasia, there was likely no country willing to accept such a large population of immigrants from Australasia, as it could be a threat to their rule.