To me, the article underscores once more the notion that compelling, useful content is already out there. Unlike many non-impressive virtual reality offerings in the 90's, CPU and GPU power is good enough to create a very compelling experience...if you have a good-enough display system.
Using these compelling 3D worlds on a desktop monitor - usually in 2D - is like watching a new High-Def DVD release on a small black&white television. Try it on a high-resolution HMD with wide FOV and good peripheral vision, and you'll never want to go back.