> selling products to people in the top 10% of global incomes
No, the majority of customers are big corporation with a very large customer base (aka lower and middle class).
The customers are the ones ultimately paying for that - e.g. when they buy food at McDonalds.
> The recruiting process is deliberately set up to yield a lot of false negatives
Absolutely. There are a hundred bad candidates for every good one, but large companies reject good ones as well will bullshit justifications for a reason: rejection keep salaries down.
Ex Amazon syseng here. Please be advised that the questions are really basic, even the "hard" ones and won't get you very far in an interview in various companies.