I have never seen a Mac in a Bank, an Insurance or a financial institution
It's probably an US thing, where Apple has an higher market penetration.
With a global 8% is highly improbable that most wealthy and influential people use Macs.
Also, for 4 billion people in the world (China, India and most of Africa) the most used operating system is Android.
> I have never seen a Mac in a Bank, an Insurance or a financial institution
I worked in a financial institution, all the programmers were issued a MBP.
I have never seen a Mac in a Bank, an Insurance or a financial institution