Isn't Mozilla organized as a for-profit that owns a non-profit? Actually, if you look at US tax law there are reasons that some non-profits have for-profit parts. I know Mayo was organized that way. I think it had to do with some salary requirements, but its been twenty years, so I'm a bit fuzzy.
There is a non-profit (The Mozilla Foundation, affectionately referred to as "mofo") which owns a for-profit (The Mozilla Corporation, known as "moco") as a wholly-owned subsidiary.
The Mozilla non profit is the owner of a for profit company that carries out much of their activity. Which you probably meant, but you've typed it the other way around.