[chubot]

Not on DOS machines, which were by far the most popular machine in that era. There was no tcp/ip because there was no kernel. I imagine the protocols that modems used were much easier to implement in each application than tcp/ip.

Even windows 3.1 had no socket support. Anyone remember WinSock?

[whoopdedo]

By 1992 there were packet drivers for most ethernet cards as well as a PPP driver. With the Waterloo TCP stack you got telnet, ftp, smtp, whois, ping, and finger. Looking at my old DOS collection I see NNTP, POP2, Gopher, Archie, and IRC as well.