Also my impression is that business or political assassinations exist to this day in many countries; a little searching suggests Russia, Mexico, Venezuela, possibly Nigeria, and more.

Oh definitely. In Mexico in particular business pairs up with organized crime all of the time to strong-arm competitors. But this happens when there's an "organized crime" tycoons can cheaply (in terms of risk) pair up with. Also, OP asked about why companies don't assassinate whistlebowers all the time specifically.

a lot of hunter-gatherer people had to be able to fight to the death, so I don't buy that it's entirely about the human constitution

That was not criminal murder by the standards of the time. Arguably a lot of gang murders committed in the United States are committed by people not capable or willing to go out and murder people on their own.

Robin Hanson has apparently asked the same thing. It seems like such a bizarre question to me:

• Most people do not have the constitution or agency for criminal murder
• Most companies do not have secrets large enough that assassinations would reduce the size of their problems on expectation
• Most people who work at large companies don't really give a shit if that company gets fined or into legal trouble, and so they don't have the motivation to personally risk anything organizing murders to prevent lawsuits

Either would just change everything, so any prediction ten years out you basically have to prepend "if AI or gene editing doesn't change everything"

We will witness a resurgent alt-right movement soon, this time facing a dulled institutional backlash compared to what kept it from growing during the mid-2010s. I could see Nick Fuentes becoming a Congressman or at least a major participant in Republican party politics within the next 10 years if AI/Gene Editing doesn't change much.

I seriously doubt on priors that Boeing corporate is murdering employees.

Stop posting prompt injections on Twitter and calling it "misalignment" 

Why aren't males way smarter than females on average? Males have ~13% higher cortical neuron density and 11% heavier brains...

Men are smarter than women, by about 2-4 points on average. Men are also larger, and so need bigger brains to compensate for their size (though this does not explain the entire difference you cite).

I'm white.

As a useless anecdote, I took Lumina in November of last year. I generally drink a lot, and have commented on hangovers getting 2-4x worse in the past few months to friends, before reading this post or knowing anything about your hypothesis. This has occurred only in the last few months and I'm 24 years old.

How is this different from the situation in the late 19th century when only a few things left seemed to need a "consensus explanation"?