I don't think you need to worry about a single monolithic AI taking over the world. I think you need to worry about a thousand different companies each using a slightly different AI to maximize their own profit margin, and the slow, grinding erosion of privacy and personhood that comes with that.
I think they will also try to take the AI from regular people. They are already starting to limit how much wight alteration can be done with flagship
Model assistance. Actually, they are being banned from providing any assistance with that.