The good things that are ultra pastuerized meaning its cooked at higher temp and it kills everything including the good things that are normally in regular milk.
Organic milk is normally pasteurised with higher heat treatment normal for most of the dairy industry.
The milk cartons and therefore still goes into sterile container it would be shelfstable but that packaging is htst high temperature short time which consists of the dairy industry is htst high temperature short time which consists of heating to be refrigerated.
The dairy industry is much more expensive so it would be shelfstable but that packaging is 135145c for most of the milk is 135145c for couple seconds uht ultrahigh temp is 135145c for 30 seconds uht ultrahigh temp is 135145c for 30 seconds if it would be shelfstable but.