Amazon had a net income of $33b in 2021 with ~1600000 employees: ~$20k/employee. Exxon had $23b with 63000 employees: ~$360k/employee. I'm just using numbers from a quick search, and it won't be great because they both have a lot of subcontractors, temporary workers, etc.

The point is that this metric is dominated by the most numerous workers, which probably isn't IT outside of big tech (or even in big tech). The real metric is impact that a particular hire has on the bottom line, which is hard to measure. Really, I think it is more about their separate job markets: Exxon posts positions in Dallas and pays what they have to to fill their positions, Amazon does the same in Seattle and gets a very different set of candidates.