Thanks for the report!
The way I see it, HWA AG is also making money by selling Formula 3 engines and especially by selling the GT3 versions of the Mercedes-AMG GT. However, doesn't the HWA AG receive money by Mercedes to run the DTM program? So in the end, if Mercedes pulls the plug, things would look not too good for HWA and thus the DTM.
That is the main problem of the DTM anyway: Too much dependence on manufacturers. I think we all agree when we say that DTM should have provided better conditions for potential privateers, right?