[arkadiyt]

Yes, in fact government agencies like the Secret Service [1], CBP [2], IRS [3], and others frequently purchase it to circumvent warrant requirements.

[1]: https://arstechnica.com/tech-policy/2020/08/secret-service-o...

[2]: https://www.wyden.senate.gov/news/press-releases/wyden-warre...

[3]: https://www.vice.com/en/article/m7agpa/irs-location-data-ven...

[gruez]

The information being sold there wasn't from mobile providers, they were collected by apps. See the first paragraph of the third article: "location data quietly harvested from ordinary smartphone apps over 10,000 times". The same applies to the other two articles.