I think that's a good comparison. The difference between the first portable computers and what we have today is massive. If AR/VR technologies evolve that way then what we'll have 30 years from now will be almost totally unrecognizable. It may not even involve a headset, or even glasses.
VR may take 4 year or 40 years to mature, or it may never take off at all, it's not something we can judge either way.