I would like to think that, having done research on GPS spoofing and being generally interested in GPS, I would have heard of this before if it were routinely done anywhere in the world. It sounds like you don't have this from an online source but from first-hand experience. Did anyone write this up? Is there local news about it perhaps?
That does not happen all the time though. I would say geolocation works nicely pretty much all the time.
Not sure why it's not possible to order a taxi, since you're not supposed to provide your own coordinates but rather a point where you want to be picked up.
You can also check [1]:
"through a collaboration with researchers from The University of Texas at Austin, we expose the use of GPS spoofing in active Russian combat zones, particularly Syria, for airspace denial purposes. This is a capability scarcely reported in the public domain. Using data from a scientific sensor on the International Space Station (ISS), we are able to identify ongoing activity that poses significant threats to civilian airline GPS systems"
there are a number of videos on youtube of people operating handheld android, ios and dedicated gps devices near the kremlin, showing the location displayed on the screen to be many dozens of km away. this will have a similar effect on a $1000 DJI drone.
