If you made a camera like the C100 but with 60p and 4:2:2 50Mbps codec, people would be more enthused to buy it and believe me, you want people to be enthused about your products, not thinking about which feature they have to compromise on.
Those stats would effectively bury the c300. This would require somebody admitting a mistake in the pricing of the c300. This doesn't happen in Japanese corporate culture. No, instead they double down with another overpriced cinema camera.
I still think the c300 is the best camera at its price or below, but I don't think the quality jump justifies the huge price premium.
Agreed, it wouldn't happen in Japanese corporate culture. However, it hurts their brand loyalty in the long run and they need to hear that.