Bombardier got lots in return. They got the assistance and clout of Airbus in marketing the plane which will increase global sales dramatically. They also got a production facility in Alabama that will help them avoid US tariffs.  Also, I imagine that Airbus will not now seek to compete against the C Series meaning that their only competition will come from an antiquated Boeing 737 meaning that the C Series should take the market. Sounds like Bombardier actually got a lot to me.