It just needs to be useful enough to dislodge the google monopoly.
People are lazy and are creatures of habit. Give them a single place to talk to ChatGPT and to search, they'll take it.
Then traditional search is going to become "raw index search" that you can query writing something like "intitle:"carbonara" source:"google_index"" or "give me all webpages containing carbonara in its title"
Really, you can believe me, outside Silicon Valley, nobody cares or cared about Juicero.
This is very different for ChatGPT, and I'm sure that if you get interested to it you'll find interesting usages with it that can fit your daily workflow (or just fun! like with image generation models).
One useful thing I learned from this, though, is that ChatGPT can handle Polish just fine. It never even occurred to me to try it - I incorrectly assumed the model was trained on English text only. I suspect that being multilingual from day 1 was a huge factor in ChatGPT's sudden and extreme user growth.