Browser extensions can have access to a lot of data, including the websites you visit, but they can also inject scripts and other code on the webpages, allowing them to improve your experience. But they can also inject malicious code, and when someone comes out of the blue and offers to “acquire” your extension for a few hundred thousand dollars, they do not really care about your users, but their data… Some examples: https://github.com/extesy/hoverzoom/discussions/670. 3/7