Although, in fairness, every business venture depends on timing to some degree. Good luck successfully getting a Google up and insanely profitable in 1900 or 2000. There are specific windows founders need to hit to find a market.
Curiously, eyeballing the search engine wiki page [0] for when the engines I know about started it looks like there was a window in the mid 90s (Yandex, Google, MSN Search -> Bing) and another one might have opened in 2010s (DDG, Bing #2, Yandex English).
People found these companies continuously, but there is a temporal component to when these companies take off.
Curiously, eyeballing the search engine wiki page [0] for when the engines I know about started it looks like there was a window in the mid 90s (Yandex, Google, MSN Search -> Bing) and another one might have opened in 2010s (DDG, Bing #2, Yandex English).
People found these companies continuously, but there is a temporal component to when these companies take off.
[0] https://en.wikipedia.org/wiki/Search_engine