Dell Technologies

Dell Technologies turned a dorm-room PC upgrade business into a $90 billion technology giant, with Michael Dell selling custom computers from his University of Texas room in 1984. The direct-to-consumer model cut out retailers, reducing costs by 20% compared to rivals like IBM, and fueled revenue growth to $5 million in its first year. By 2023, Dell held a 16% share of the global PC market, shipping over 50 million units annually.