This is not correct for access open to the general public. The first commercial ISP in Utah, Xmission, was founded in 1993. Yes, many of us had internet access through the University of Utah before that (Pete Ashdown, the founder, had worked at Evans & Sutherland, which had quite good internet connectivity). But most people did not if they weren't associated with a university.
(I helped create the third public ISP in Utah (ArosNet), in 1995).
V34 (28.8k) was only ratified in 1994, and many ISPs were still at 14.4 at that time. Many customers still used much slower modems - 9600 remained quite common.
The commercial Internet really only started taking off in 1993. Not by coincidence, that was the same year NCSA Mosaic was released.