They generated $4.3B in revenue without any advertising program to monetise their 700 million weekly active users, most of whom use the free product.
Google earns essentially all of its revenue from ads, $264B in 2024. ChatGPT has more consumer trust than Google at this point, and numerous ways of inserting sponsored results, which they’re starting to experiment with with the recent announcement of direct checkout.
The biggest concern IMO is how good the open weight models coming out of China are, on consumer hardware. But as long as OpenAI remains the go-to for the average consumer, they’ll be fine.