Elad started his career with a PhD in cancer biology prior to starting the mobile team at Google, so I don't think "academic imperialism" is an accurate descriptor.
I think you'll see more people with these hybrid skills over time. They take years to develop, though.
If we want advancement in medicine, can we really do it without deep collaboration between biology and computer science? If so, isn't Color Genomics a model of particularly deep cross-disciplinary work, not academic imperialism?