The internet is much bigger, more diverse and complex today. You need a lot of storage to get any meaningful impact. Caching the http of Wikipedia won't get you much. You need to cache lots of YouTube videos. Or you just get them from the data center you peer with over the fat link you built.
With bandwidth usage the diversity of the data retrived over the internet has also gone up. You can't just cache the few most popular websites and save most bandwidth. But bandwidth capacity has scaled a lot so you probably also do not need to.
With bandwidth usage the diversity of the data retrived over the internet has also gone up. You can't just cache the few most popular websites and save most bandwidth. But bandwidth capacity has scaled a lot so you probably also do not need to.