There was no investment in the iPhone. Apple hired Steve Jobs and gave him an R&D budget, with the faith that he would direct the company toward breakthroughs. No investor was asked to back the iPhone, they merely had stock in Apple.
Jobs had the vision to realize that with proper execution and with the legendary marketing, he could create demand for the iPhone. The supply of the product with proper marketing created the demand, this is how markets work.
Apple invested in Steve Jobs with an R&D budget. The stock holders in Apple were the investors. Jobs created a product and as you admit, created a market. Apple nor Jobs would have developed the product without the belief and anticipation that there would be demand. You are admitting in your latest post that anticipated demand was the key element and motivation for creation of a product.
Now where is that example of the job that was created without demand in the equation.