>>106110400 (OP)the basic concept of the lightbulb is responsible for widespread electrification, the entire consumer electronics market (can't invent the diode or television without artifical light), entire fields of physics (can't observe the electron without the cathode ray tube, can't understand EMR without the xray/radios), the entire computer industry (can't do lithography or create a monitor without artificial light), and so on.
In fact, the light bulb is almost universally used to symbolise a game-changing idea or even the very act of invention