I suspect Prof Elinor Sloan has nailed it. Near the very end of the article, she is quoted as saying that "My guess is they are having to walk back that clear policy statement [2015, a Liberal Gov't will NOT buy the F-35] ... [and] ... I can only read into this that [F-35 Joint Strike Fighter] will be chosen. They need to find a way, a political way, to justify this about-face."
Agreed Mr. Campbell, Prof. Sloan is bang on. Certainly no doubt that Boeing’s actions precipitated the chain of events that led to Bombardier’s C-Series being taken over by Airbus, arguably (perhaps) keeping Canada and Quebec from recovering any value from their C-Series related investments. Most likely post-election, g will announce its moving ahead with the F-35 acquisition.