Earlier quoted context omitted.
Hypothetically, I imagine they'd sue for damage to their brand. Mozilla has been pushing Firefox as the privacy browser, and if Comcast were to break the deal it would hurt users' trust in Mozilla. I agree it is unclear what the consideration from each party is, though.
Comcast does not appear to be using the Mozilla brand. Am I missing something?
"We, Mozilla, are a privacy-first company. Firefox is powered by DNS services that respect your privacy. You can trust that your browsing history is safe with us."
> "BREAKING: Firefox default DNS provider tracks what sites you visit"
^damage to reputation