Great question — answering as the UphillTech team:
Press reports have cited a single apparently well known reason as to why Oppenheimer was released when it was, and not moved or otherwise delayed with regards to WB's Barbie release. Barmar in comments does allude to a reason why WB felt they did not have to move their date either - their product in terms of name, brand, director and cast, were strong enough to stand on their own against any competitor. So why hasn’t either Universal or Warner Bros blinked? Why have they both resolutely held the line, and not shuffled a week or two either way to give each other space. Well, half of that is easy to answer: Universal can’t . The backdrop to why goes back to when Christopher Nolan opted to end...
Full answer by blobbymcblobby: https://movies.stackexchange.com/a/120650 (CC BY-SA 4.0).
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