They're afraid!
I think the health insurance companies are actually taken by surprise by the amount of people who sincerely wish them death. Maybe we will see some almost-meaningful change soon?
That's literally what the second amendment is about.
The idea isn't necessarily to overthrow the military with a coup. It's to make those in power afraid to piss off enough people that they can't walk down the street without some random person with a gun going after them.