Google, once a key champion of public WiFi as a way to dilute the MNOs’ cellular dominance of mobile broadband, has been quiet on this front lately. But now it has re-entered the fray with a new platform called Orion WiFi, which will support the elusive goal of seamless roaming onto hotspots, while improving monetization options for location owners. Orion aims to make the case for high quality public WiFi more attractive to owners of venues, office blocks, shopping malls and other locations with complex wireless needs, by improving the chance to make money from investing in hotspots. Google is targeting the system, initially in the USA, at WiFi-first mobile operators as well as hotspot aggregators. Its own MVNO, Google…