where the $3000/hour figure came from

I just pulled a number out of my ass lol reality is that they're spending significantly more for this security, I just wanted to give an example of what it costs to have one security guard getting paid $75/hr (guesstimate hourly rate for mid level security) for each of these 40 executives.

Scale that as far as you want $3000/hr is just the bare minimum for something like this

I dont disagree with your point though. They could pay to send a monkey into the sun. Its not a matter of what they can afford; it's about sending a message.