

Can you elaborate? ICE development is not linked to the number of cylinders I think. I wouldn’t see how it is I mean. And the V6 they use now is vastly different than the V10 of before. Mazda even developed a new way of combustion so I’d hardly say there’s no optimisation or application.
The application of a balancing shaft (or not) is not something I’d classify as something development depends on but that could be a difference in opinion.
Of course we’re at least halfway over the s curve for development of the ICE. And while electric is waiting for a breakthrough in energy storage I still believe there’s a lot to be gained with ICE as well. Besides, the emotion and feeling of an ICE can be emulated but not replaced. F1 is of course about innovation but most of all “just” a sport and for fun. You don’t see football (soccer?) be about innovation. Or basketball for that matter.