Earlier quoted context omitted.
The Altair 8080 is considered the first PC and it was released in 1974. The IBM PC was released in 1981 and PCs became widespread only in the 1990's, when they started adding multimedia features. So about 20 years for mass adoption. The first touchscreen phone was introduced in 1994, the IBM Simon. Yet the first true modern smartphone to get mass adoption was the iPhone, 2007. And truly massive adoption worldwide hap…
With the exception that current VR devices are actually pretty good and much better than the first PC/Touchscreen phone. It will probably be closer to 5 years than 10 year for the first mass adopted rig.
AR has a ton of potential though (e.g. windshield HUDs).