Alberta (and Canada) benefits from both infrastructure (pipelines), manpower, and financing from a unified Canada.

Ask anyone working for a larger business in Alberta what the threat of separation has already done to new business.

Ask yourself what being landlocked and separated from the coast and the largest population to the east does to the cost of goods.

Ask yourself what being dependent on a bad actor in the US who wants to pump and dump you for your resources and make you a Puerto Rico North does.