He had a vision of something different, and a very aggressive plan to bring his concept to reality. Would we have Android without iPhone? Would old guys like me, with arthritic thumbs, be sending text messages or searching for dining and hotels on business trips? Buying stuff we do not really need on eBay from our phones?
Maybe at some point, but who knows when that would have happened. Mr. Jobs showed what could be possible and made it happen. I might even say, that aside from Thomas Edison and Benjamin Franklin, there might not have been a more significant contributor to changing so many aspects of our world.