I will however observe;
None of the supplied examples showed any form of network effect. It was all stuff you did at home.
Today, there are certainly options for personal computing for most everything- as long as network effects are not in play.
Those options may not be as convenient, as cheap, or as feature-rich as the invasive option. That's fair though - you decide what you want to prioritize.
Network effects are harder to deal with. To the extent that in order to be in community you need to adopt the software the community has chosen.
Not surprisingly, software producers that can build-in network effects, do so. It's excellent from a lock-in point of view.
The title of the article is perhaps then ironic. It's trivial to make computing personal. All the tools to do so already exist.
The issue is not Personal Computing. It's Community Computing.