Technically only the Mozilla Foundation is non-profit. The Mozilla Corporation which is the organization that has the deal with Google about the search feature,

Technically only the Mozilla Foundation is non-profit. The Mozilla Corporation which is the organization that has the deal with Google about the search feature, and is the one which distributes common versions of Firefox is not non-profit. Granted Mozilla Corporation is owned by Mozilla Foundation, but still, this just shows that in non-non-profits organizations the decisions are governed by owners, for better or for worse.