It's interesting that the opening analogy in the post uses an Excel spreadsheet as a great way to explain a database. It's such an easy next step to say the way an xls/ods file is saved is a file format but the column layout in the tabs/tables are the schemas. The court (and the city) playing these games is so scary since it is so biased toward all modern government data being covered by FOIA exemptions.
atp - all the features are available and can be self hosted & I think it is going to be that way for a long time - This is a side project and so I'm not really pressed to make money from it instead I am excited about seeing the community get some sort of value from it. If for some reason we need to further commercialise the project all features that wouldn't be self hosted will live in the enterprise directory and will be developed by an in-house team not the open source community.