Oh please, the cancellation of the EE export terminal on the St. Lawrence makes no difference to Alberta since the proposed pipeline is the same capacity as it was before, but terminating in Saint John, which is a better port for the project.  They've also made some changes in route based on local concerns.

But since you didn't like that example, another 4 examples would be that NB, NS, NL and Quebec each have their own specific moratorium on fracking while still exploiting and exploring other O&G projects that pose less risk.  

And it's not eastern Canada who is "not allowing" Alberta to export through BC. -- it's BC.  Personally, I wonder if KM had been a little more like Transcanada and shown some willingness to listen and talk with stakeholders, then they wouldn't have this epic battle on their hands.  Instead, they've been adversarial at every turn, even refusing to reveal their spill recovery plan to the provincial government, which only makes them look bad.