> and you sell that power to the highest bidder

You make it sound like FB knew that the accounts that "...posed as fans of pop stars and national heroes" were run by a military operation.

> because "we can't scale that"

And how would you scale that?

I don't think there is any easy solution (or even an "ideal" solution).

Not to mention that FB is on now dealing with actual dam military operations by an authoritarian government. How would you defend yourself against that?