These numbers are easy to find, but sure, let's break out our calculators. By recent generic numbers, Jane street does $171MM revenues across 900 employees. Apple has $274B revenues across 137,000 heads.
$190,000 vs. $2,000,000. Netflix is even higher: $2.4MM. What numbers do you have?
Your Jane Street numbers are not even close. They're required to report this stuff in the UK, which shows revenues of $229MM (see https://find-and-update.company-information.service.gov.uk/c...). And that's just the UK revenue - most of the business is in the US. I would estimate closer to $1MM/head.
Depends on the company. For example most of Walmart's revenue goes to buying goods to sell. Apple sells physical products and hence will spend a lot of money acquiring the physical parts etc, you can't really compare their revenue to for examples Facebooks revenue.
$190,000 vs. $2,000,000. Netflix is even higher: $2.4MM. What numbers do you have?