Hype still sells and we still idolize people though. Businessmen such as Steve Jobs or (early) Elon Musk curate an image of themselves as a "genius", which leads to popularity of their products and influences trends and opinions in specific fields.

Really though, no single person did or invented anything alone. Every well-known and highly regarded scientist, inventor, or businessman built their work as a small increment on top of hundreds of predecessors. The Upright Thinkers by Leonard Mlodinow is a good pop-sci book that carries that point throughout.