It might be longer than five years, but the market has massive potential. I've owned a bunch of headsets, and I demo them to anyone who wants to try one. The reactions go like this: initial shock and awe (more and more so as the tech has improved), followed by childlike glee and fascination. I've shown skeptics an Apollo 11 recreation, telling them to just try it for five minutes, and no one has spent less than an hour yet.

They come out amazed and wondering why these aren't everywhere. Then they ask how much it costs (~$4000) and their excitement vanishes.

You can get a setup for much less than that now, but it's blurrier, slower, uglier, more nauseating, and lacks important features like finger tracking. It won't be smartphone-level for a long time, if ever, but once the tech reaches affordable levels, I'm convinced there will be a larger audience.