As the comments below observe, I think the types and number of experiences built on the back of new (to mainstream audiences anyway) technology were transformative.
In 92 the Amiga 1200 came out, a wonderful computer with great hardware but unfortunately it never made it big. Four years later in 1996 mass market PCs were coming out with Pentium processors, 3dfx accelerators, high resolution bitmap displays, internet connections and powerful general purpose sound adapters.
Today we have orders of magnitude more computing power, but essentially they are powering the same experiences, albeit far more polished.
If we look back four years, 2014, not much has really changed. The big game releases indeed are the same games (in the 90s they'd have been called mission packs).
The magic of experiencing something completely brand new, completely alien and magical, has gone away. Though, I am hopeful VR/AR is going to deliver that again. I don't know how far off it is, but it would be fitting if it's Carmack and Abrash behind it. Again.