Corporations showed up but it was all running over the NSF backbone so commercial use was suppressed, and "sysops" would e.g. immediately ban users for e-mail s

Corporations showed up but it was all running over the NSF backbone so commercial use was suppressed, and "sysops" would e.g. immediately ban users for e-mail spam since they were worried about losing their upstream (and transitively back up to the backbone). I can't find the Bills that were passed now to commercialize the Internet and get off of NSFnet but that was early in the Clinton-Gore administration.