Revisiting the home internet location issue

I am in an area within a mile of a tower, have great speeds, never deal with buffering, but I have the location issue everyone else has. 

I understand the how the addresses are routed, to a point and this is also where I get confused.

TMobile says they can track where your gateways goes.  They know the physical address it is supposed to be and knows when it is elsewhere.  I believe my gateway has GPS in it as well.  It is the newest of the routers.  Why can't that be used to give physical location to the browsers?

With that said, with the location issue be everywhere, could this be brought up as a class-action?  I was never told that location would be an issue and currently new subscribers to the service apparently not being told based on how may people are bringing up the issue just after starting the service?

Again, other than the location issue (which is frustrating because I don't live in Detroit, Columbus, nor Nashville) the service is reliable and fast.