Enter Dangermond... Jack noted how there's a wealth of geographic data locked up within GIS' around the globe. All that will change when ESRI rolls out ArcGIS (and ArcGIS Server) at 9.3 (in about 4 weeks) which I've heard boasts much focus on KML and at 9.3 provides plug-in support for the GeoWeb. Imagine modelling (using ArcGIS data) a fire, road closures, a flood, a smoke plume or ??? using data from the GeoDatabase via a Google Earth client.
Jack Dangermond, ESRI and John Hanke, Google on stage at Where2.0 (Photo Credit: Me!)