Who beat Edison?

In the context of the historic "War of Currents," Nikola Tesla and George Westinghouse successfully promoted alternating current (AC) over Thomas Edison's direct current (DC) system. This competition ultimately led to the widespread adoption of AC for electrical power distribution. In a more general sense, many individuals and entities have "beaten" Edison in various competitions or contexts, but Tesla and Westinghouse were particularly significant in the realm of electrical engineering.