It’s often not even about cost. Vertical integration works great if you can always make right R&D decisions. If you bet on wrong horses (even if you have money)

It’s often not even about cost. Vertical integration works great if you can always make right R&D decisions. If you bet on wrong horses (even if you have money) you’re hopelessly stuck as you cannot “easily” shift to different suppliers that made better R&D choices. Just look at Intel.