Perhaps we are using the phrase killer product in different ways. When I use it, I don't mean that it's popular, I mean that it's so desirable to its customers

Perhaps we are using the phrase killer product in different ways. When I use it, I don't mean that it's popular, I mean that it's so desirable to its customers that they subordinate all other considerations to it. For example, Visicalc was a killer product: People bought computers to run Visicalc, rather than buying a spreadsheet to run on their computers. PageMaker was a killer product: People bought Macs to run PageMaker rather than choosing a desktop publishing program to run on their Macs. For all its ubiquity, Flash is not a killer product outside of the video delivery realm: People obviously do not choose a phone to run their Flash games, and developers seem fine learning an entirely new language (Objective C) and framework (Cocoa) to build iPhone applications. Flash is a killer product in exactly the same sense that J2EE is a killer product.