Isn't it a little disingenuous to call analytics tools "adtech". Yes, you can integrate analytics with adtech platforms, by even in isolation, knowing how your users use your own site and how they arrived there, allows you to better serve them.

In a physical place of business, for example, a retail store or restaurant, keeping track of what times or parts of the store were busiest, or where people spent the most time, would allow you to eliminate waste from your business, and sometimes that involves knowing how many unique customer foot traffic you're getting.