[spankalee]

This is why I think that web-centric, open source, hosted core apps would be nice to see.

If you want to use the web as your primary application runtime, you're currently stuck with closed-source apps, or pretty bad open source apps that are difficult to integrate.

Sandstorm did (and still is as a community project) try to integrate some existing apps into a cohesive-ish platform with nice security guarantees, but it wasn't really made accessible to every day users.

Something similar to Google Workspace, but open source and hosted by a foundation could be a nice default starting point and/or a principled platform to use, for a lot of users.