That may be true for the companies that you know of. We are exposed to different fields I guess, which is why we have different experiences regarding this situation. I have experienced and have professional relationships with some companies that go so far as to trace the IP address of the applicant while they complete the chat interview phase of the applicant. This is actually the second step in their application process. The first being the submission of their resume.
They keep the applicant on the line long enough for their IT staff to do a complete and accurate IP lookup on the applicant. That is because they have come across some writers who claim to be US based or educated when applying for the writer position. Since they discovered that some of the applicants actually purchase previously used writer information (with only the applicant name changing) to give them a believable background when applying, they thought it best to do IP address traces to find out where the applicant is really located.
Once they learn that the applicant is misrepresenting his location, he receives an application rejection based on fraudulent representation of his personal data. Maybe not all companies do this, but there are some who actually go through the trouble to do so to protect their current and potential clients.
The opinions are that of the author's alone based on an individual capacity. Opinions are provided "as is" and are not error-free.