Boeing didn’t want competition in the US domestic market. They thought they could squeeze out Bombardier, but weren’t expecting that to come around and have the A220 get sold to Airbus (who are now doing really well with the A220, since the A220 is legitimately a really nice plane).
Bombardier sold their commercial aviation industry (aka the CSeries). Now they’re only focused on private jets.
Which they sold to Airbus, which is why Boeing went for them I guess.
Boeing didn’t want competition in the US domestic market. They thought they could squeeze out Bombardier, but weren’t expecting that to come around and have the A220 get sold to Airbus (who are now doing really well with the A220, since the A220 is legitimately a really nice plane).