I wouodn’t say so - a short while after (allegedly luigi mangione) shot that healthcare ceo, someome attacked the offices of a company called Blackstone. Very si ilar sounding to Blackrock but i personally had never heard of it.

Being non-american and not into finance both increase likelihood you haven’t heard of a certain billionaire and fortune 500 company. Also, how many chinese or indian billionaires do you know of? They exist in vast numbers, but i doubt you’d know about them unkess you come from there. Personally I was surprised to learn about the founder of ‘alibaba’