its simple 

Canada needs to start manufacturing its own bomber and fighter aircraft and Bombardier could be just the one to do it

does any one really think Boeing hasn't benefited from the immense trillion dollar defence industry contracts it  has received over the past 70 years 

contracts that have allowed it to swallow up the competition and stake out a huge part of the passenger aircraft business

if those aren't subsidies what are

Americans talk about a level playing field but cheat every chance they get and then rig the rules to favour their industries