I said first killer (market defining and expanding product) product, iPhone wasn't the first smartphone either, but they pushed them from cool towards ubiquitous
I had the same thought too. If memory serves me right google was not magnitudes of scale better than other engines just better marketed, more accessible, and easier to use(interface).
Even now, despite Googles distinct capabilities, I almost exclusively use DuckDuckGo as I find that it is good enough for me, and doesn't leave me spooked after a search with its insidious snooping. So much for 'Don't be Evil'