This statement seems like it could easily evolve to a profit generating mechanism. It surely will be used to train their AI extensions which is one to start with. They could also claim that selling your browsing habits in an anonymized way to private companies for personalized ads is also part of the better experience goal above. Very vague statement. They are very clear on how they will own your usage statistics but not so clear on what they will be doing with it. Which really makes their aim quite clear. If there is anyone who is legally bound by this statement, it is the user who cant complain about their private data being monopolized and even sold (Firefox owns it %100 apparently). Anything legally binding for Firefox? No not even a promise. They can do whatever the hell they want with your data as long as they follow some basic laws I suppose. And the claim about better interaction is just some feel good words to calm people reading that statement. As in chrome most of this can likely be turned off which I will. But forcing these as default settings down someone’s throat is like assuming a %50 tip by default and expecting the customer to change it.

If Mozilla wants to limit their use of my input, why the do I need to give them a full, non-exclusive license?

But what does that actually mean? It just sounds as vague and non descriptive as possible, which is the worrisome part legally