As an older tech person, it's legit heartwarming watching the TikTok generation discover why we all hate Oracle.
@garius As no DBA (and maybe to young?) I always asked myself if there was ever a usecase for prperitary DBMS products? I saw it AS strict requirement for 3rd party Software, but for what? Thinking of PostgreSQL (and other free DBs) it offers clustering, scripting, extensions like GIS, ...
So what was the point? 

@blub @garius Many years ago there was a use case for picking DB2, Oracle, etc. There either were no free RDBMS systems or the ones that existed weren't yet advanced / stable enough. It's hard to see a good use case today.

1968 or 69, Cincom released TOTAL(*), a network database.
1979: Oracle 2.3 First commercially available SQL RDBMS
1981: IBM SQL/DS(*) released
1983: IBM DB2(*) gains SQL
1983: Oracle 3.1.3 rewritten in C & ported to UNIX
1993 MS SQL Server, a rebadged Sybase, released for NT
1994: Postgres95, first version of Postgres with SQL replacing POSTQUEL
1995 May the first version of mySQL released "For personal use" whatever that means.
1995 September PostgreSQL relicenced under a FOSS licence.
2000 SQLite 1.0 released.
2001 SQLite 2.0 had transactions

(*)=For IBM mainframes.
There were other database systems available for other mainframes.