Depends - if the robots can replicate without the same environment as people, then other environments might be better suited to the robotic colony.

However, that's treating robots or AI like we would people. Robots aren't people, nor are AIs. They are likely to take forms we cannot comprehend, and likely to change us in ways we cannot comprehend, at first. I'd argue that it is already happening. At the moment we're farming AI, but it might not be long until AI is farming us.