My guess is that it doesn’t work in Canada because Kobo was a Canadian company before it was acquired and because Kobo’s owner used to own Overdrive (before it sold it to private equity a few years ago), but I could be wrong.
Obviously, if a device doesn’t work with the services you engage with, it’s probably not the service for you. But since Kindle does work with many, many library systems (and its arrangements with libraries predates Kobo’s existence), I think that’s more regional edge case and not a blanket reason to use one over the other, which is what OP was saying.
LOL, you think this is an _edge_ case? Feels pretty central from where me and the rest of the world are sitting...
I’m not going to pretend that’s the same for everyone, but I’m equally not going to pretend every person who has an e-reader is constantly getting stuff from the public library.
Meanwhile Amazon has been constantly messing with their proprietary format, DRM etc. Any book bought outside their store also almost always needs conversion too.
PS: Yeah that wouldn't work for books with DRM. So might be its the problem.