If basal intelligence is present in diverse computational structures, then weak intelligence is everywhere.
If weak intelligence is everywhere, Earth-like planets are everywhere, ... where are the aliens?
Personally, I blame game theory. Too many agents too smart in one place, you get conflicts, and eventually someone breaks an atom apart in your direction.
Or do you need emotions to have conflict? Are there basal emotions?
I'm usually not worried about AI uprisings, but I do believe in the possibility of conflict.