Objection 1: It is unlikely that there will be a point at which a unified agent will be able to take over the world, given the existence of competing AIs with comparable power
For what it’s worth, the Metaculus crowd forecast for the question “Will transformative AI result in a singleton (as opposed to a multipolar world)?” is currently “60%”. That is, forecasters believe it’s more likely than not that there won’t be competing AIs with comparable power, which runs counter to your claim.
(I bring this up seeing as you make a forecasting-based argument for your claim.)
(Fwiw, the Forum moderation team does this for many of our cases.)