You're wrong.

Such companies track more than what you may think and not only to help an individual ripped off.
It's called data mining. They collect millions stuff.
Big companies like Bitstamp , etoro, and other CEXs are using it. So what do you think they're doing. CEXs provide them a lot of information about their customers trading on their platform.

It's not so different than a data broker.

data mining is such a powerfull industry, people do not realize what can be done with it... against them...