Apple’s practice of leveraging ideas from its third-party developer community to become new iOS and Mac features and apps has a hefty price tag, a new report indicates. With the release of iOS 18 later this fall, Apple’s changes may affect apps that today have an estimated $393 million in revenue and have been downloaded roughly 58 million times over the past year, according to an analysis by app intelligence firm Appfigures. Every June at Apple’s Worldwide Developer Conference, the iPhone maker...