Uh...clearly you are unfamiliar with George Lucas.
Posted by Joe on March 6, 2018, 2:30 pm, in reply to "Nope didn't know that"
He doesn't believe in re-releasing earlier versions of his movies once he's made alterations. He did release the original Star Wars movies as bonus features on one of the DVD editions, but they were non-anamorphic and taken from the laser disc prints, unlike the anamorphic, remastered, altered versions that they came with. Also THX was never on Criterion, at least not according to Wikipedia's list of every Criterion. If you want to see the old one I don't think it was ever on DVD, so the laserdisc was probably the only place to see it in widescreen.
You can see many comparison shots here: https://www.movie-censorship.com/report.php?ID=541751