> People read the text on their Uni systems, where they got free dialup, rather than chew up their ISP connection time quotas.
At dialup speeds, the only practical binaries one could download would be images. mp3 files were practically the upper limit of file size one could download. Beyond that, articles would expire off the server before they could be downloaded.
Without broadband and better completion rates, which commercial ISPs didn't really provide (especially the latter), customers probably wouldn't really try using their usenet feed for that purpose when they had other alternatives for binaries.
I just used my ISP's usenet access for text groups until they discontinued it.