That's amazing. I always wondered about watching old (1930s-1950s) movies where they would give credits to the lead cast at the start and just end with a "The End" card with no credits. I always wondered if they just cut the credits off, but I guess they never existed!
I'm just glad they stopped putting so many opening credits in films. It's basically insufferable to watch old movies with 10+minutes of opening credits. I'm annoyed by the 3-5 minutes of production credits at the start of movies today as it is.
Wow, it never even registered to me until I read this comment that the Star Wars movies didn't have opening credits. They're usually so forgettable anyway, and after reading that article, it seems so silly and ridiculous that all the various Guilds and Associations and Hollywood Political Units got so butthurt over that decision.
Lord of the Rings also famously does not have opening credits. Just runs right into the film. With the expectation that you might have just finished the previous film and ready to start the next.