An interesting study is to look at the approach to location based services (LBS) used by the operators/device manufacturers/internet companies and explore who's winning - while there is a lot of money to be made this area of the market is still relatively early and is continuing to show growth.
Here the traditional models are being played out. The Operators spent on building infrastructure to "own" and "control" the location in the network using clever solutions like cell triangulation, then tried to resell this valuable data to developers - without huge amounts of success. Device manufacturers added GPS hardware to devices in an effort to sell more devices at higher price points ("buy this device for $20 more than that device - it's got location") - given the Q4 results from Motorola, Nokia and Sony Ericsson this doesn't seem to have significantly increased overall volumes or improved margins. Internet companies have made location information available to everyone for free, and focussed on driving traffic to monetize using advertising.
Overall the only folk who stand out as winners here are the specialised device manufacturers - Garmin in particular has done a great job of creating niche product lines that are focussed on individual applications of location and are driving their business forward as a result.
So all those attempts to "own the platform" don't seem to be working? Why not? I believe that the lesson here is that platforms are created as a result of great products. So the iPhone & iPod Touch is creating a platform out of OS X for embedded devices with iTunes, the IBM PC created a great platform from a great product - just so people in LBS need to focus their attention on creating "great products" that speak to users - not try and defend their existing platforms and business models.