"removing biological limits" is a big handwave. Biological hardware is tuned exceptionally well for intelligence, and we have a massive amount of it distributed worldwide. We already remove biological limits by building tools, computers, powerplants etc. Duplicating one AGI unit now doubles the amount of energy and resources it needs, and also creates a requirement that the system can somehow produce more of itself and all the supporting infrastructure it requires. It's not just a matter of being "intelligent" (im not even sure what "intelligent" means in this context either) - it will need to have power to act in the world, and not get sidetracked over-weighting any one of the multiple competing optimizations in complicated real world problem landscapes it will need to navigate to scale.