The article is exploring a broad topic but one area that seems to be overlooked is governments making privacy illegal or actively working to undermine it. The major privacy risk right now is things like social media age verification laws which, in principle, probably make pseudonymous sites like HN illegal or on the path to being illegal in many jurisdictions.

It is hard to maintain privacy when a law enforcement body insists that it isn't allowed. There are also indications that companies quickly become too enmeshed with intelligence services to be able to create properly private options even if tactically they might have an interest. Companies like Telegram stand out as looking difficult to run in practice because of the pressure from various snoops.

If it is legal to create private options then they will always exist because the people who care about specific aspects of privacy can self-serve.