010101 What if by like... 2050... it became the best way to do things for some reason?
That's extraordinarily unlikely. Most DBMSs (MySQL, Postgres, MSSQL, etc) use the filesystem as underlying storage, but also support a huge amount of absolutely crucial features:
- A standardized query language, backed by a query optimizer
- Integrity constraints
- Concurrency resolution support
- Transactions
- Many forms of indexing
Among many others. I can't imagine any upside that would outweigh throwing away all those benefits.
Flat file works well for static sites; i.e. those where there's a single source of all content. Not so much for dynamic communities with many interacting users.
