Re: @the d-rat (non e-mouse)
It's pretty difficult to scale anything if you can't trust your ISP - and moving the "scaling" functions (such as caching and load balancing) away from the supplier you're paying to provide them to a provider who can only get their income from elsewhere is not necessarily in your long term interests.
There's plenty of opportunity for mischief if a malicious site I happen to visit also provides the DNS translation of the various domains linked from the same page - or can potentially influence the translation of domain names of sites I have yet to visit.