Facts:
-The videogame crash only happened in America, not elsewhere https://en.wikipedia.org/wiki/North_American_video_game_crash_of_1983
-Therefore the impact the NES had was small, it wasn't popular outside Japan and America, the markets outside America were doing well
-The Genesis would've saved the American industry 3 years later anyway
-NES sold only about 3.5 million units in Europe by 1992
-Europeans had their own consoles and games in the 80s, especially from the UK
-Sega was more popular in Europe (and elsewhere like Brazil)
-Europe (and rest of the world) to this day are still Nintendo's weakest market
This narrative that NES saved gaming is ignorant revisionism. It's actual impact was limited to just one market. In the 80s the industry was seggregated, each region had their own household names. Without Nintendo, Sega would've taken their place.
edit: looks like they closed this thread: NES didn't influence anyone. Sega was already an established arcade manufacturer, they released a console day and date with the Famicom in Japan, the SMS and Megadrive were coming regardless how NES was received in America. These consoles weren't made for the American market in mind but the Japanese.
Whether the US market tanked or not, it wouldn't have mattered for videogames anyway, as I said, the regions were seggregated and each market was different. Japan didn't depend on American sales to survive for like 2 more decades. Whether NES came to America or not, you'd still get all the Nintendo games for decades to come.