I don’t buy that OpenAI abruptly decided to shutdown Sora because they have something better coming soon, but I have to guesses as to why:
They found out it’s being used for something really bad and they might be held liable
They’re trying to get ahead of growing anti-AI backlash and are trying to present themselves as less “sloppy” since a lot more of the backlash is targeted at generated images and video.
The AI bubble is bursting and video generation is one of the more expensive parts of their business and they’re trying to cut costs.

