Not hard to see why DTM has been slow to realise what is happening with the German manufactures IMO.
This was Gerhard Berger in July last year: https://www.autospor...dtm-dna--berger
Meanwhile FE has pulled in Audi, BMW, Mercedes and Porsche. We've known that was to be the case since mid 2017 and it should have sent yet more alarm bells ringing when Mercedes quit DTM for FE a year later. Yet as recently as mid last year Berger was still a huge FE critic and was sceptical of hybrids in DTM let alone electric.
It was only in November that DTM revealed an open ended 'electric vision' with battery swaps and 1000bhp machinery and now they plan to have the spec hybrid in 2022. But they have missed so many chances to get on top of what is going on and I think critically failed to see what was happening right under their noses.
Let's not forget that FE is only a strategic marketing exercise, not a racing series .
Manufacturers mainly join for the low cost of entry and financial incentives , such as subsidized tech development and favourable treatment by regulatory bodies .
Same reason why they build fully electric cars at all, plus fleet average emissions rules , tax savings etc .
DTM's issues go far beyond engine technology - in many parts of the world, much of motor racing has lost its mass appeal years ago .
Especially for a series that was a bit niche to begin with, and was lucky to get as much attention for as long as it did .