I mean if you control the software on the "player" you don't really need a dedicated dvd format. Think about mp3 CDs, it never became a real format with specs and everything yet most CD players after a certain date supported them.
You are missing the parts where MP3 is made by a company that makes a music player, publishes a spec to get recognized as an open standard, then starts diverging from this spec to prevent interoperability while of course still pretending to be an open format.
Said company has also been convicted for anti-competitive practices, against the other spreadsheet software.
Do you work with office workers? Tabbed design does not help them. I literally had a co worker ask me to if I could put spellcheck from the revision tab to the main one (or have it always showing).
Σαββατοκύριακο. Saturday and Sunday.
It would be far weirder to start the week on Δευτέρα which literally meaning "second".
Of course in English and other languages Monday does not mean second. Still for Mose western (plus Arabs) Monday has been second after Sunday. Long before Saturday was a day off.
ISO defining the start of the week as Monday due to it being the first business day (lol) has comparatively little impact.
I mean if you control the software on the "player" you don't really need a dedicated dvd format. Think about mp3 CDs, it never became a real format with specs and everything yet most CD players after a certain date supported them.