there is simply no market for another cargo operator in germany at present.
there is only one german cargo carrier...
why not a second one...
Don't forget that within a catchment area of a few hundred kilometers, ACG will also have to compete with Cargolux, Cargo B and TNT, not just German carriers.
I'm not saying it won't work (look at Cargo B, they are still in business, despite all doom and gloom predictions) but ACG is definitely going to be fighting an uphill battle.