Well, Opera GX may not sell your data directly, but Opera LTD. The Company behind the browser, most certainly does earn money on the private information it collects. After all, the Company itself states that “as noted in our end user license agreements and terms of service, our applications are ad-supported.” ıt's all written in the “personalized ads” section of Opera privacy statement. We're sharing the entire section below:
personalized ads.
Based on advertising ıds and your general location, some of our Mobile applications may serve targeted ads. These ads are provided by our monetization partners. You can always adjust your personalized ad choices in the application's “settings” menu or through your operating System's settings.
We collect this data pursuant to our legitimate business interests. As noted in our end user license agreements and terms of service, our applications are ad-supported. Collecting this information helps us offset the costs of our business and helps provide a more personalized Experience for the user.