A few thoughts here. 1) DHL started in the US in 1969 and became German owned a little after 2002 (it has a pretty cool origin story where the founder felt there was a better way to deliver overnight goods to Hawaii than to literally sit a person on a plane and stuff legal documents in his luggage. He used his student loans to... "bootstrap"). IMO the article loses some credibility by using "foreign competition" verb…
I'm quite sure that otherwise, they'd fly themselves as they own all airlines flying for them within the EU and Asia (except the ones that also fly to US).