When it comes to anything with computers it’s difficult to imagine ways to end up more incompetent than literally all German public (or pseudo-public, like here) agencies. You’d certainly get something more competent by collecting random strangers off the street. It’s virtually impossible to overstate how bad the situation in this area truly is in Germany.
The fact that the agency is public or private has no innate meaning in terms of efficiency. The people in the organization and the processes make it more or less efficient and this is true independently from where the funding is coming from.
Can public organizations be made more efficient? Of course, as any organization can.
Finally, in this case is it not a private firm that is promoting inefficiency via dishonest market practices?
The real issue here is that the public agency has to buy services and products from private firms. Why can't the German state produce cost efficient routers on its own?