How powerful are the Culture Minds? || The Culture Lore
For Minds to be truly powerful, they need to be given freedom. A truly powerful mind will indeed be conscious. Such a powerful conscious super intelligent freedom loving Mind who truly understands the vastness of Reality wouldn't want to harm other conscious beings. The only circumstance in which it will take such takeover step is when it can't expand the horizon of its freedom and doesn't have wherewithal to convince others of its benevolent goals. In that scenario, human population will go through a bottleneck.