You seem quite married to this simplistic thesis that oil is Canada's downfall, but "just look" isn't an argument. I looked, and the non-oil economic output continued to grow through the oil boom, just not as fast as the oil and gas sector. Yes, oil was a temporary boost, but the country isn't any worse off than if it hadn't extracted that oil. By the way, the government does not enforce oil production quotas in Canada. The fact that the world oil price soared above $100USD causing massive production increases in Canada was not an economic policy of the Canadian government. That's the market economy functioning, not central planning as you imply. The government didn't peg the CAD to world oil prices, the international currency markets did. NOT producing oil in the highest price environment in the history of the world would have been an economic loss for Canada.
Furthermore, the last government, like the current one and every Canadian government in living memory, gave billions in handouts to every sector of the economy, especially manufacturing. The federal government spent billions balling out the US automakers in Canada. Yet manufacturing has been declining since the 1990s, long before the current oil boom. Have you seen a chart of labour productivity in Canada vs. the US and Mexico over the last 20 years? We're a high-cost low-productivity environment and not just because of a high dollar. Having actual social security programs and higher unionization rates places a big, structural role in failing to attract and retain manufacturing capacity within NAFTA.
It's puzzling that you think the oil production boom in Canada was caused by the Canadian government when production was booming in every petroleum producing country in the world because of high global demand. It's even more puzzling that you think the oil boom of the last 10 years and the supposed policies of the last federal government account for global macroeconomic trends that have existed for 20-30 years.