Because when you talk to a salesperson you know you're being looked at (and reciprocally you're looking at them), and human memory is limited so it's unlikely they will retain any "data" about you when the contact is finished.
Here, instead, there is no indication that you're being watched, analyzed and kept recorded for indefinite amounts of time.
Here, instead, there is no indication that you're being watched, analyzed and kept recorded for indefinite amounts of time.