Why Apple doubled down on the expensive custom chip business, edging out Intel and starting a trend

Apple has designed its own custom chips for iPhones since 2010, kicking off a trend followed by other non-chip giants like Google, Microsoft, Amazon and Tesla. In November, CNBC became the first journalists to film inside an Apple chip lab, where it tests its latest M3 chips that replaced Intel processors in all new Macs. We also got a rare chance to talk with Apple's head of silicon, Johny Srouji, about geopolitical risks in Taiwan, slowdowns, and what's next in AI.