The scope of this thread is if Mozilla has the potential to make successful products (or, things, I guess) beyond Firefox. The OP claims its not possible for the organization to do so. In my mind, showing they have created software that has traction (some revenue generating, some not) disproves this. A PM considers a product successful if it is adopted and loved by users. Other people consider it successful if its team is cash flow positive. Others consider it successful if it bolsters the company brand. The definition of successful I was working with is one that shows Mozilla can ship useful software.