[bostik]

I'll provide a slightly different argument.

I talked to FB people (recruiters, managers) in the site integrity team back in 2018. Admittedly I had some reservations up front, but during the on-site day I made up my mind to never even consider FB as a potential employer again. During a chat session between interviews, I asked about the prospect of doing proactive education - essentially, detecting users who had been caught in the influence operations and then surfacing them a note that they had been targeted by such activities, so that they could themselves make educated decisions.

The senior manager I was talking with at the time was visibly taken aback by the very idea. "We don't do that!"

From that experience I drew the inference that FB are fundamentally, as an organisation, incapable of doing the right thing. I suspect it's less about the cost, and more about the prospect of openly accepting accountability for what their platform is really used for.