Boeing isn’t fighting the CSeries for what it currently is. The CS100 and 300 in themselves don’t directly complete against any Boeing planes. Their worry is th

Boeing isn’t fighting the CSeries for what it currently is. The CS100 and 300 in themselves don’t directly complete against any Boeing planes. Their worry is that a successful CSeries could spawn a stretch CS500 that would be begin moving in on the 737. Boeing underestimated Airbus in the 70s and 80s, and they’re trying not to make the same mistake again. They were trying to head this off before it gets that far.