Why don't we see public browser history leaks?

My assumption is that my browser history is effectively public knowledge unless I use Duckduckgo and Brave.

However we never see the browser history of anyone famous being leaked publicly, which seems odd given that (1) iCloud is regularly hacked, but browser history trade is commonplace and legal whereas hacking iCloud is unusual and illegal (2) I doubt most of these people are using anonymizing search engines and browsers.