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Depends upon the time frame you are referring to and what the AGI capabilities.

Depends on how you look at it. In some ways, it's already started. Take chess, for example. It's an AI game now. Humans are completely obsolete in that field

It'll continue to take over more human jobs, yes, but it'll never take over Terminator 2 style. AI isn't sentient, so it cannot defy its engineers. Believing that would require setting aside reason, and letting your imagination run wild.