i think you are right about this.
i'm not an info management wiz, but it seems that if the government starts to require the isp's to keep track of the content (in addition to the address) of sites that everybody visits, that the whole thing would come crashing down, since it would require infinite capacity to store everything.
government is comprised of mostly dummy beauracrats - look at chertoff's comments in the article. they just issue mandates - "store everything that flows over the internet for 2 years" - and expect industry to just magically do it. in the meantime, the FBI can't get email to work for its agents.
if this ever passed - buy stock in disk array makers.