There should be an HTTP-Header, or a sub-string in the User-Agent header, that specifies "dialup". Then, like "mobile" versions of sites, they could have a dial-up version, that DOES NOT autoplay video backgrounds to your web pages, among other bandwidth-gobblers. They could still support most web sites, on dialup. Granted, it would feel like using Lynx (an early text-based browser, might still be developed), but it would be functional. I mean, isn't the web meant to be scalable, and accessible to all?