Edison treated public fame as something to be manufactured and managed, courting the press and feeding reporters quotable predictions before the underlying inventions actually worked. The persona of the lone heroic genius was itself a constructed product, built to attract investors and crowd out competitors' claims to the same breakthroughs.
In 1878 Edison publicly declared he had solved the problem of incandescent lighting and would soon illuminate lower Manhattan, triggering a crash in gas company stocks, though a workable long-lasting bulb was still over a year of unsolved laboratory work away. The announcement secured funding and press attention first; the functioning technology was assembled afterward under the pressure of the promise.
Edison's Menlo Park laboratory reframed invention from solitary flashes of inspiration into a systematic industrial operation staffed by teams of skilled machinists, chemists and draftsmen working under his direction. The credited genius was in large part the output of a managed workforce whose individual contributions were absorbed into the Edison name.
Edison's talent for conceiving and demonstrating inventions did not translate into skill at running the companies built on them, and he repeatedly lost control of his own ventures to better financiers and managers. Viewing him as two distinct figures, the inventor and the failed executive, reveals that technical breakthrough and commercial capture are different competencies that rarely reside in the same person.