It just sounds unambitious because of the way you wrote it.

GOOG: Hey lets save the entire internet on our servers and be better than anyone else by magnitudes

FACE: I want to have everyone in the world to have a profile on facebook

AMAZ: I want every book in the world to be sold on my website, and pretty much everything else.

AAPL: I want to be better at product design than and become better than Microsoft

MSFT: I tricked IBM into doing distribution for us, but I want a PC in everyone's home within 10 years.

I think those come closer to the founders visions than what you wrote. Some of my versions actually include mindsets that their founders at the very beginning.