It should be clear to the reader, anyway, that liberal use of Imperius would NOT be sufficient to take over the government, at least not for any meaningful length of time.
Unless Eliezer has deliberately depowered Imperious—which isn’t impossible—or given the Ministry some sort of get-out-of-Imperius-free-card—which is also possible, what with the Ministry being created almost exactly in it’s present form by Merlin, a significant change from canon—then liberal use of Imperius cold absolutely take over the government. My theory is that “Voldemort” was deliberately playing the role of the Evil Monster who’s about to take over the world, but never does; perhaps in an attempt to have Wizarding Britain unite against him.
Unless Eliezer has deliberately depowered Imperious—which isn’t impossible—or given the Ministry some sort of get-out-of-Imperius-free-card—which is also possible, what with the Ministry being created almost exactly in it’s present form by Merlin, a significant change from canon—then liberal use of Imperius cold absolutely take over the government. My theory is that “Voldemort” was deliberately playing the role of the Evil Monster who’s about to take over the world, but never does; perhaps in an attempt to have Wizarding Britain unite against him.