"What will happen if Google cuts off Mozilla's revenue?!"
Google and Mozilla use these very cool legal devices called "contracts" so there's no "cutting off" of anything. The current contract covers the next three years.
"Where will Firefox get new users now that Chrome replaced Firefox in the Google Pack?!"
Firefox gets approximately 1.3 million downloads per day without Google's help. More than 95% of Firefox users found it via Mozilla's direct download.
