The authorities who would be iniating SAR action would be able to get that sort of information without having to go on G-INFO.
There is only one source of that information. G-INFO (provided by the CAA). You ever tried to get hold of someone at the CAA to provide you with data at 3am ??
I wouldn't have a problem with basic data only being publicly available (e.g. without contact details), however there are a wide range of people and companies who do need full access on an H24 basis.
What difference would paying make ?? The information is already paid for by everyone in aviation or indeed members of the public at large who contribute to the CAA in any way shape or form. If the service raised funds would you expect CAA charges to drop accordingly ?? I wouldn't hold my breath
