I dunno if I can reconcile your viewpoint, but it seems to me that you forgot one aspect in this privacy versus open-access debate: reciprocity.
Personnally, I would also accept to share some information (water metering or financial for sure, maybe not the other kind as easily :-) but with a condition: only if those accessing this information do not do such access anonymously either and reciprocally accept that their access be adequately recorded for me to know .
I also think that privacy-everywhere (in the computer hacker sense) may be an impairement in the long run. (Note that some law enforcement professionals even see this as a problem.) But clearly, publishing personal information without asking for anything in return (especially the identity of those who access or use the information) does not sound sensible either to me.
NB: Investigation power organization in the legal system (of democratic countries) may certainly deserve more study from our open source security community.
 What about "cookie exchange"? At least we could gather very precise information about companies doing users tracking on the Internet...