Apple’s new iPad and iMac ranges are adopting the same M1 processor, which could simplify the firm’s supply chain. Control over all aspects of its machines and software may also have helped Apple avoid the semiconductor challenges that laptop makers including AsusTek have flagged. The shortage of semiconductors could continue “for at least the next 12 months” according to S&P Global Ratings. As a result prices in the electronics supply chain are likely to rise. The shortage reflects a surge in demand as much as limits on supplies. The latter appears health...