So what’s the unifying theme in all these products, those I mention and those Schell cites? Not reality, in my view, but accessibility: ease of acquisition or ease of use.
Interactive entertainment that can be enjoyed immediately and intuitively, with as low a barrier to entry as possible. Start swinging the Wii remote, and get instant feedback; select an iPhone app you want to play, and start playing it in several minutes. Low cost, short installation/start-up times.