We are under the control an extraterrestrial alien species.
Specifically, under the protection an instellar government and remotely administered via concession to an entertainment conglomerate.
We will never be invaded by an extrasolar force because we are protected by one. Our planet is resource-poor yet full of endlessly entertaining (and extremely dangerous/“mostly harmless”) creatures. Our comic sagas never repeat but often rhyme. (So they advertise to “be sure and watch closely the first time!”) The rest of the solar system is also under their protection as a sort of “preserve and strategic reserve” but may be exploited at some point in the future. The only thing the aliens have taken from the Earth is enough stock to raise maize on other worlds for the sole purpose of producing popcorn.
A standing order to interests within their state runs, roughly:
ALL OF THESE WORLDS ARE OURS TO USE AND ENJOY IN PEACE.
EXCEPT CLOWNWORLD. ATTEMPT NO LANDINGS THERE.
/S 😄
So then...earth is a cosmic “the Truman show” where far more advanced civilizations tune in for the comedic antics of those wild and crazy earth creatures and any civilization that interfered with the show would be ostracized by everyone everywhere. Makes more sense than a lot of other theories I’ve read lately.