Toronto

I'll be perfectly honest: I don't care about the technicalities. Anybody can still buy compostable garbage bags that, to a layperson, sure feel similar to any other plastic bag.

If it is biodegradable / compostable, it should be available for purchase at checkout points for a small fee, regardless of whether it is made of plastic, advanced biopolymers or unicorn semen.

The only place I see with degradable bags at checkout is Whole Foods with their (rather robust) paper bags. All other shops have done away with disposable bags and it's an annoyance to customers when they forget their reusable bags at home.