Perceived economic benefits (mostly short-term) trump the needs of all Canadians and their children and grandchildren for clean air and water, healthy food and a stable climate. Droughts, floods, water shortages, insect-plagued forests, extreme weather events, rising sea levels and melting glaciers don't matter as much as getting the oil, gas and coal out of the ground and sold as quickly as possible.
Sometimes it isn't the government that's to blame for back door deals. Back in 1869, two wily financiers, Jay Gould and James Fisk, thought they could outsmart the government and corner the gold market, but were foiled by the administration. Gould and Fisk tried to buy massive amounts of gold at a low price and then sell high using insider information.
Millions of dollars have been channeled into framing climate change messages by intentional misuse of language so as to mislead the masses. Unfortunately misleading language is precisely what the fossil fuel industry continues to thrive on; surely "ethical oil" sounds more appealing than tar-sands oil.