This is most likely going to happen with an incoming authoritarian gov't anyway.
Do recall that one Congress critter, that is very pro-gun was shot at a baseball game, survived, and still stood against gun legislation. We'll see if things change if the wind shifts and more rich people (the Congresscritters' owners) are targeted.
The scenario you describe is rather frightening. Let's hope the "CEO class" (for lack of a better term) and the general public will allow reason and ethics to win out.
One thing that is for certain, there should be better legal limits to what companies can get away with. We need our justice system to get involved well before vigilante's start running amok. The US government should have stepped in a full decade ago to reign-in United Healthcare's misconduct and fraud.
They won't. They're making billions out of others suffering.
>general public will allow reason and ethics to win out
"Ethics". It's a trolley problem... if a person through their actions enables many people to die, is it wrong to kill them?
To paraphrase Chris Rock... I ain't saying he should have killed him... But I understand.
The term you are looking for is "oligarchs"
Besides politicians, corrupt private leaders are at risk.
I am also not convinced that assassinations will make society less stable. At least in the targeting assassin's mind, it's intended to make society more stable by eliminating corruption.
I wouldn't be surprised if New York passes new gun control laws because of this shooting; I wouldn't be surprised if there's a congresscritter or White House Staffer or judge who's assassinated in the next several years causing some kind of martial law situation. It's scary times we live in right now.