I havnen't a clue. I sure couldn't afford those online services, the
price was relatively high, and then often it was either long distance or
requiring some other service to connect you.
1996 was pretty late. I didn't get internet access till then, and I felt
at the time like I'd gotten here late. The first wave of local ISPs had
come and mostly bought up by larger ISPs and Big ISPs had already
launched. It was still early, in the sense that there were still plenty
of people who weren't online, but that's for the general population.
The people using Delphi (or Genie) were likely the ones to jump to
the internet as early as possible, and since they were already paying the
money, paying for internet access would have been less of an issue, just
switch from the pay service to an ISP.
The expense limited how many ever used such services, and then once the
internet became accessible (remember, some of the early internet access
was via "freenets", internet access for all, either freeor minimal cost)
that would have been more tempting.
Michael