Interestingly, both sides cite the United order for 40 (later 65) 737-700s, in early 2016, as evidence for its positions. According to multiple sources, United was able to buy those 737-700s at a price point of $20-25 million per aircraft, representing a massive discount on the regular sales price for the 737-700.
United was also considering the CSeries for that purchase, and in Boeing’s eyes, it had to discount the 737-700 much more deeply than it would have without the threat of Bombardier’s pricing. At the same time, Bombardier views this as an example of rank hypocrisy on the part of Boeing, which also arguably priced the 737-700 either at or below production cost.
In a way, both sides are right. Boeing certainly would not have priced the 737-700s around $20 million if it didn’t have the competition from Bombardier. But that price point is below Boeing’s production cost in all likelihood, and pricing below production costs to win deals (the 747-8 excepted) is a reasonably common practice for both Boeing and Airbus.
So I don't know what's unfair here.. Boeing failed to eliminate another competitor from the U.S Market.
Now, don't call me an Airbus fanboy but I like Boeing however that doesn't mean I'll be biased about it.