With the new BlackBerry Storm on Verizon, fears have been that they'd do the same. It appears that they haven't quite done this, but who knows? Until I hear definitive proof that Google Maps works on this device, I'd be suspicious. Here's what PC Magazine has to say in their review of the storm (LINK).
"Two GPS applications are on board, Verizon's $9.99 per month VZNavigator, (which gives you spoken, turn-by-turn driving directions) and the free BlackBerry Maps (which doesn't). The camera app is also GPS-enabled, so you can geotag your photos. I found the GPS to be unusually good at swiftly locking onto satellite signals. When it can't get a signal at all, the system resorts to a rough estimate based on cell-tower locations. The GPS is "unlocked," meaning that third-party programs on the phone can use it to find locations. But apps have to be written specifically for the Storm—the generic version of Google Maps for BlackBerry, for instance, couldn't get a GPS fix."