This source seems to indicate that’s not the case:

1. Google Search & Other (56.93%)

   2023 Total Google Search & Other Revenue: $175.04 billion
   This is revenue generated primarily from ads shown on Google’s search results pages and other search-related services.

2. YouTube Ads (10.26%)

   2023 Total Youtube Ads Revenue: $31.51 billion
   This is revenue from ads shown on YouTube videos, including display ads, overlay ads, skippable video ads, and non-skippable video ads.

3. Google Network (10.20%)

   2023 Total Google Network Revenue: $31.316 billion
   This is revenue from ads displayed on websites and apps that are part of Google’s ad network, beyond Google-owned properties.

4. Google Other (11.26%)

   2023 Total Google Other Revenue: $34.68 billion
   This is revenue from Google’s other ventures and products, such as hardware (like Pixel phones and Nest devices), Play Store purchases, and other non-advertising sources.

5. Google Cloud (10.75%)

   2023 Total Google Cloud Revenue: $33.08 billion
   This is revenue from Google’s cloud computing services, such as computing power, storage, and data analytics offered to businesses and developers.

So, 57% from search, and only 10% from ads on non-Google pages.