If you want electoral reform, one of the best things you can do is get involved. Join the federal and provincial parties you think you can make the most progress toward electoral reform by being a member. Push for ER at the meetings.
A nice side-effect of being involved in political parties is that in addition to getting to vote in the public elections, you also get to vote for your local candidate and the party leader.
It depends on how much you trust or distrust that government or corporation. You might trust or distrust one government more than another or one corporation more than another. I can easily think of some governments and corporations I would trust more or less than other ones. Of course one shouldn't completely trust or distrust any government or corporation. Choose which ones to trust carefully, hope for the best, but be prepared for the worst.