Have you met the British East India Company [3] and the Dutch East India Company (VOC) [4]? The VOC even has a genocide to it's name [1]. [edit] Make that two. [2]
A lot of colonialism was actually carried out by private enterprise. Substantially all of slavery. Once you reach a certain size and scale, is there really even a difference between government and enterprise - except that the voters control one and shareholders the other?
[1] https://historibersama.com/the-voc-genocide-historia/
[2] https://en.wikipedia.org/wiki/Amboyna_massacre