Mozilla Foundation is non-profit. Mozilla Corporation is for-profit, and makes most of its revenue by selling the default search engine slot in Firefox to Google.
>I think the companies listed only develop Open Source software and sell services.
That's true, but I think it's looking at the situation completely wrong. It's sort of like saying that making left shoes is unprofitable because there are so few successful businesses that exclusively manufacture left shoes.
I think the companies listed only develop Open Source software and sell services. Google and Apple may use and support Open Source projects, but the real money makers are proprietary.
I agree that the list is still wrong.