pples recent product launch caused headlines around the world as it unveiled its first folding phone. But hidden in the slick technology showcase was a nasty surprise: a £100 increase in the price of all iPhones, including older models. It is blamed on “RAMageddon”, which has reversed a decades long trend of electronics becoming cheaper. It is the fallout from the AI gold rush hoovering up every memory chip available for vast datacentres. This has led to a severe shortage of the chips, and...