This had absolutely nothing to do with your claim that "Newfoundland and Alberta are in economic hardship because government has mismanaged resources."

This is all about the collapse of oil prices worldwide - nothing to do with provincial mismanagement

You miss the fact that the pipeline delivers oil to where it can be exported and at a much better price.  The revenues from oil exports not only benefit the producing provinces but all of Canada as the enhanced tax revenues allow for greater sustainable spending on social services.  You have heard of federal support to provinces and territories by way of major transfers (including the Canada Health Transfer, the Canada Social Transfer and Equalization), eh?  

The Conservatives realized that and pursued a from 2007 to 2015 greatly increased transfers to the provinces from $47.1 billion (Per Capita Allocation $1,434) in 2007 to $68 billion (Per Capita Allocation $1,899)  and the Conservatives managed to do this during a major recession.