Companies and universities could, however, cough up for expensive alternatives, such as a diginet line which the ISP I worked for at the time offered. These guaranteed uptime (which was very appealing as ADSL outages were very common) but you paid a hell of a lot of money per 64kbps of uncapped bandwidth. You were looking at something like $400-$500 a month per 64k for the cheapest support package. And we weren't even the most expensive. There was a law firm that was paying something like $30k a month for their pimped out 2048kbps line.
Thank God things have improved dramatically there in the last decade (at least in terms of internet speeds).