You do know that professional hitmen actually exist, right? You can straight up pay a guy to kill someone for you.
It would be utter insanity to ask someone who legally works for you to kill someone. Which is why that doesn't happen. What actually happens is someone tells someone to deal with the guy and a paper bag full of cash appears in front of Joe's Killin Place in the middle of the night.
No, professional corporate hitmen do not exist in contemporary America. Again, movies and video games are not real life. The only "hitmen" in real life are idiot junkies who get hired by their idiot cousin to kill their estranged wife in exchange for drug money and then immediately get caught because violent criminals are morons and not criminal masterminds.
It would be utter insanity to ask someone who legally works for you to kill someone. Which is why that doesn't happen. What actually happens is someone tells someone to deal with the guy and a paper bag full of cash appears in front of Joe's Killin Place in the middle of the night.