We take exams at school for basically the same reason.
You have to set up an institution or structured lessons to get the higher levels of cognitive measurement.
A company can use an educated guess for cognitive ability. Usually made up from completed tasks.
Selling features that don't exist is a side-effect of the company culture.
It's easy to observe the business culture in the West is often well divorced from academic truth seeking. As a matter of fact and good business.