Lots of reading on the chip shortage.
Part of it is to do as mentioned above, it's the 'old' chips that factories don't want to produce anymore, so the car makers are looking at what options they have. Chip manufacturers are always bringing out new models, in new 'sizes' and that doesn't suit the car industry.
Domino, I'm hoping the new RS6's will come out with the physical buttons for aircon etc, as I love the screens, but impossible to keep clean!