How did the Falcon/Commodore lose it all?

[HULK_I6T]

Growing up I could always remember either the falcon or the commodore at the top of the sales charts. Every motor/wheels magazine was a falcon vs commodore shoot out. The Australian public loved them and there was daylight to anything else.

But somewhere along the way it all went out the window? Now from 2016 falcon will be gone and commodore likely to go too. It seems no one wants them anymore?

But where did it all go so wrong? Have the cars grown up in size too much? Too much competitive pressure from other car makers? Needs of the common family changed? Fuel prices and living costs? Requirement to have baby seats in cars? A particular model was released? Government departments started buying other cars?? Australian industry couldn't keep pace with other nations?

What's your rationale for when things started to go horribly wrong and lead the falcodore to demise? When the war is over come 2016, Do we simply down tools and walk away? pick another car manufacturer? This community and the ls1 community become largely extinct?

What happened from what seemed like market domination to extinction?