Warez, and porn. Neither of which are easy to defend when an ISP is looking to address the costs of a Usenet feed. Towards the end, we had close to 100 Mbps full time just for the feed, as I recall. Then we outsourced it to cut that cost. But then management decided none of our customers needed alt.binaries and we dropped it altogether. The effect on churn was negligible.
Totally agree with this. Why would any commercial ISP want to offer this as a service?
There was very little upside and massive potential liabilities because they were storing and supplying unmoderated content that in the very best case was pirated music and movies.
