Is there a 'Moore's Law' for web pages?
blog.jgc.org
blog.jgc.org
http://httparchive.org/trends.php
As any website performance optimizer will tell you, increasing broadband bandwidth won't really help at all with this "inflation". The biggest components of page speed is usually the number of round trip times, which only reducing latency can help with.
http://httparchive.org/trends.php?s=All&minlabel=Nov+15+...
Small amount of time relatively speaking (the Guardian example was from 96 through 2011). So the general trend for a bunch of sites (on httparchive.org) looks more-or-less linear, but that's probably because only a limited amount of time (2 years) is in view.
You can also reduce the number of round trip times by using something like SPDY.
Some years ago video on the web was a crazy idea now is something normal.
So in that sense we could expect many websites' bandwidth usage to follow Nielsen's law [http://www.useit.com/alertbox/980405.html]
I looked around on the Wayback Machine a bit but it seems like images are not always stored.
The Guardian has one of the worst layouts of any webpage I regularly visit.