For OpenAI that was and felt like some side husle they were playing around nothing more.
Having Disney on their side was def quite a smart/interesting move.
At least from one interview, they def had resource issues last year and teams had to fight for it. Can easily be that sora was always priortized down and they realized it doesn't make sense to spend that much capacity while then not being able to push their main model.
It never made sense and was always just burning resources that OpenAI does not have.
It reeks so much of desperation. They know they are running out of goodwill and money at breakneck speed. They are just flailing and throwing shit against the wall to see if anything sticks.