[GrantS]

>3D will eventually become standard, simply because the world is 3D

I don't disagree with you at all, but if you're using the term "3D" in the same way as the article, the first "3D" in that sentence is referring to stereoscopic displays that are driven by our specific animal biology of having two eyes, while the second "3D" in your sentence refers to the external world, which would still have three dimensions even if we only had one eye, in which case stereoscopic displays would not be necessary.

If instead you meant holographic-style displays, then nevermind :)