Like Helmut Marko (Red Bull motorsport chief) says: Formula E it’s not about racing, it’s about marketing; manus are using it to save their faces after Diesel scandal.

And he is correct. WRC and WRC2 like most other top classes that has factory support is about R&D and marketing.

VAG and other major brands will only produce electric cars in a few years, petroleum engines will die.
I have sold my petrol and diesel cars, and have only electric cars.

In Norway about 50% of all new cars sold are electric, due to very little tax on new cars and no or little road tax.

It will come, like it or not, Money and marketing rule.