But imagine the same happening between 1992 and 2002. 10 years there meant fundamental incompatibility. A 486 computer with 8 MB RAM and VGA graphics card was already a paper weight in 2002. No Windows XP and Warcraft 3 for you. A Core i7-3970X with a GeForce GTX 680 can still play the latest games at 1080p, including many DirectX 12 games, except for the ones that now require AVX2.
But to answer your question if we would have been stuck with 1992 technology the internet would have evolved differently, and mainframes would play a much bigger role, to the point that your desktop computer would be just a thin client, running the latest amazing software accelerated by mainframe computers. You would submit jobs from your computer, the mainframe would calculate it and get back to you.