Privacy though, privacy is like speech or equality before the law or presumption of innocence. You have it by default and if it’s denied there is a culprit.
Even in this case, we seem to have a hard time expanding rights. I say expanding, but privacy is a right in many places, formally. But, the interpretation of that right is very weak.
Anyway… if we’re to make privacy a right with serious intent then there needs to be a willingness to break eggs, bear a cost. The right to free speech, conscience, affiliation , assembly and other political freedoms mean we need to tolerate and protect the proverbial nazis’ rights to try and spread their politics. Bitter pill for anyone scared of a proverbial nazi takeover.
Are we willing to bear the (fear-based, mostly) costs in the fight against the terrorism demon. The economic costs that will be claimed by companies relying on data? If we have a strong yes, I think we can start building the real framework of laws and conventions that will secure a right to privacy for the next few generations.
Absolute principles require some sacrifice.