Energy is the most regulated industry in Canada by all three levels of government. The fiscal regulatory decisions set by governments are the business decisions made by energy companies in this country. TransCanada had committed to proceed with the energy east pipeline until one month before, after extended delays, rule changes, disbanding the panels, re-appointments, and a last-minute condition of applying downstream emissions to that project. That is why TransCanada abandoned the energy east pipeline, which was the only opportunity into the east coast for shipping to the European market and for securing Canada's domestic supply. That is exactly because of the Liberals' decisions.
In the House of Commons on April 30th, 2018. See this statement in context.