"added some fluff, made things simpler, and marketed the idea"
Well what on earth do you need a pre-assembled computer for? You just take some circuit boards and a soldering iron, then assemble everything over the weekend and you have a perfectly good computer. I don't understand why this Apple I thing is so popular, it's nothing special.
Far as I can tell, every successful piece of tech out there can be reduced to "Added some fluff, simplicity, and marketing to an already existing technology"