Except cupcake shops and craft breweries are allowed to differentiate (gluten free, superhero themed, we only sell wild fermented German beers...) while the legal cannabis retailers in Canada are more akin to owning a Subway franchise.
You must purchase your cannabis from a select set of suppliers chosen by the government (yes, the very same ones your competition must purchase from), you are not allowed to offer discounts/freebies on cannabis products (only rolling papers or similar non-psychoactive products). It is still illegal to operate any kind of venue that allows consumption, so while you can decorate your retail space like an Apple store or a Pier 1, you can't run trivia nights or do movie screenings or anything that might result in people patronizing your business over the one next door offering the same product for $0.05 cheaper.
Pre-legalization, I could go to a store (not legally operated) and look at the bud in the jar, smell it, and make decisions based on something other than a sealed package with no artwork or description on it. Some stores even offered consumption of "dabs" which is a great model: those things cost a lot of money and aren't really fun to have in your home and maintain, and it was very competitive with "a pint after work". All of this went away after 2017.