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It's also important to note that these "successors" are never replacements, even when successful. They're new layers added to the old stack. A "new web" is successful if it gains enough traction to become the new center of gravity of the tech ecosystem.
Isn't VR already a story of modest success? 3D cinema was a failure, VR sets are not common (wrt smartphones they are negligible). VR has applications and can be fun for someone. But so many are not able to watch 3D illusion for hours without problems.
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