Semiconductor manufacturing is such a tenuous proposition. This is why we simply cannot rely entirely on one vendor/process to make all our chips.

Vertical integration on simpler process nodes seems like a good idea if you are going to be in the business of making electric cars. To me, IGBT manufacturing for EVs is equivalent to building the valve train for an engine.

You have to have control over the fundamental aspects of your business or you are just a hat riding on top of someone else’s.