Earlier quoted context omitted.
See my post below for some answers; I was writing as you posted yours ...
Thanks. As a follow-up, there are existing services that already have this database. So why build another one? Is it because the existing ones aren't open source?
The combined Mozilla + OpenCellID cell tower location database is public domain and published hourly here:
https://location.services.mozilla.com/downloads
Mozilla's Wi-Fi location database is not currently published until we can solve the privacy concerns.