Being THE term is the holy grail for consumer brands. You can only get huge when your brand is the synonym for a whole concept or industry. Like ColaCola, Uber, Facebook, Tweet etc etc. For example Mark's explanation of Facebook [1] or the Photocopier sketch [2]

Edit: fixed link order

[1] https://youtu.be/cUNX3azkZyk?t=135 (video)

[2] https://www.youtube.com/watch?v=PZbqAMEwtOE (video)