Efforts to pass legislation in the Berlin Reichstag in 1912-13 to establish a German state-owned company to develop and run the new found oil resources, independent of the American Rockefeller combine, were stalled and delayed until the outbreak of World War in August 1914 pushed it from the agenda.
Engdahl sounds like another apologist.
In this case, it’s easy to blame Standard oil, but government of the time in Germany surely did most of the work to thwart its own supplies of future oil