I think "the web" in this case really means media sites and some retailers. The media sites don't have a clue how to make money, other than to include all the usual ad networks and tracking scripts and then sit back and hope. The ecommerce guys are obsessed with slicing and dicing visitor behavior and tracking conversions. Seems to me that outside these (admittedly rather vaguely defined) spaces the web is a much cleaner and snappier place.