Canada is a country of oligopolies - everywhere from the products you can buy to the Federal Liberal Party's Trudeau Foundation being the receiving end for paid political favours.
It is hard to think of areas where there is actual competition in Canada, because there are so few.
Media? None, the Federal Liberals fund the approved media and leave the unapproved to fend for itself or die. The approved media is then highly encouraged (unofficially) to tow the Party line and back up anything Trudeau says - especially when it's a fabrication.
Banks? Highly controlled via charters, although actual regulation would make a 1970s Cayman's banker blush.
Food? There is a literal milk cartel. There are three major grocers - all highly vertically integrated. One was just on the news a few years ago for price-fixing bread, and also received untold millions for a refrigeration overhaul from the Federal Government.
Telecom? See the outage.
Law enforcement? The RCMP (Canadian CIA) was recently caught editorializing a report to suit a gun bill Trudeau's Liberals had been waiting for a reason to pass. The Federal Government was also crucial in telling the RCMP what to report and when. In any first world country this would be scandalous and met with a wave of resignations. In Canada, it's a Trudeau Tuesday.