Assessing Tim Cook's 15-Year Legacy at Apple: Key Triumphs and Setbacks

Tim Cook is stepping down as Apple CEO after 15 years, with hardware chief John Ternus taking over. His tenure saw the company launch major products and services, cementing its position as one of the world's most profitable tech firms. The article reviews his most significant achievements and missteps during that period.
Cook inherited a company heavily dependent on the iPhone, which accounted for roughly half of all revenue at his start. His diversification strategy centered on services, building out subscriptions and payment systems that eventually generated $100 billion annually. The Apple silicon transition, beginning in 2020, moved Macs from Intel processors to Apple's own ARM-based chips — a risky shift that succeeded where similar Windows-based attempts had stumbled.
The article frames Cook's tenure as a mix of achievements and failures, with the full list of ten wins and misses yet to be detailed. His successor, hardware chief John Ternus, steps in amid this established ecosystem of services and custom silicon, inheriting a company far more diversified than the one Cook took over.
Cook's departure could reshape how consumers experience Apple's ecosystem, as new leadership may shift priorities across hardware, services, and software integration. The company's massive services revenue means millions of subscribers could see changes in pricing, bundling, or feature availability. Apple silicon's success may also influence broader industry trends, potentially accelerating similar chip transitions elsewhere. Consumers and investors alike could feel ripple effects from strategic pivots under Ternus, though continuity seems likely given his long tenure within Apple's existing framework.