> wouldn't they have open sourced it by now?
If there's minimal value in it, why put in the work to open source an extremely complex test environment?
Just for completeness sake, they do offer a SQLite Consortium Membership for $120k, which I guess includes all their test suites as a selling point:
https://www.sqlite.org/prosupport.html
If there wasn't a competitive advantage given it has no sales, wouldn't they have open sourced it by now?