In this context, it's sort of interesting to compare Google's approach of trying a million ideas, then killing the ones that don't take off or don't make money. Maybe that's how you stay ahead of the game and don't become a Kodak, which failed to sustain an experimental new business for long enough. Google takes quite a lot of shit for this approach (understandably).

But are any of Google's side projects an existential threat to their main business of search / ads in the way that digital cameras were to film for Kodak?