The reason is plain.

All State concessions fall naturally to that State which is practically dominant; its products are bought by all the consumers who are any way dependent on the power of the State, quite apart from the fact that by reduced tariffs and similar advantages for the favoured wares the concession of the open door can be evaded in various ways.

A "policy of the open door" must at best be regarded as a makeshift, and as a complement of a vigorous colonial policy.

The essential point is for a country to have colonies or its own and a predominant political influence in the spheres where its markets lie.

Our German world policy must be guided by these considerations.
The execution of such political schemes would certainly clash with many old-fashioned notions and vested rights of the traditional European policy.