It would be a peak Sayu moment if she turned down whatever Sakana offered in negotiations because he couldn't compete with that "impossible deal".Uh-huh.
No, seriously, this is obviously pure speculation, but the way i see it, it's entirely possible that "NOA offered me a super-good deal" and "holy shit NOA turned out to be incredibly shady i'm backing off" are two entirely separate events in Sayu's mind.
Which would in turn make her judge any following negotiations based off of the super-good deal she was offered before, making it impossible for any non-scam company to satisfy her wants.