> I don't think their AUP considers the browser software a service.
One would think so, right? But why does Mozilla want me to "license" to them everything I "upload or input [...] through Firefox"[1]. Where do the "facilitated services" start and where do they end? It sure would be nice if they could draw that distinction, without it, the cautious interpretation would be that that everything is a facilitated service.
> I don't think their AUP considers the browser software a service.
It is not just about their services! They clarify it by writing: "Your use of Firefox must follow Mozilla’s Acceptable Use Policy, and you agree that you will not use Firefox to infringe anyone’s rights or violate any applicable laws or regulations." Src.: https://www.mozilla.org/en-US/about/legal/terms/firefox/
I don't think their AUP considers the browser software a service.