To be fair, if the innovation we are crediting Occulus is successfully popularizing VR, I think we are being premature.
There have been VR headsets available for years, at comparable prices. They were less immersive, but we will see the Occulus as unimmersive in a few years.
Whether it actually popularizes VR, or is just a fad will depend on whether comparable products are common in 5 or 10 years.
For instance Nintendo did not popularize power gloves. They were cool, but it turned out people didn't want to play games like that. http://en.wikipedia.org/wiki/Power_Glove