IIRC didn't a recent prime minister (probably Trudeau) say that we would do it if the US also did it? I agree that DST is a mistake but I think doing it without coordination of the US would be cause fare more pain than benefits.

The EU also recommended member states to stop doing DST if I recall correctly. So it seems like if the US can be convinced the world would pretty quickly move away from DST.

On the other hand aren't the health concerns mostly bunk? I remember seeing a lot of studies that noted an uptick of various issues during a DST transition but closer inspection revealed that the vast majority of this effect was time-shifting of issues that were going to happen anyways. Basically if you were going to have a heart attack in the next week you will have it during the jump, but if you look at the week or month overall there was no statically significant change. I do admit that I am behind on research here though. Are there any well reviewed meta-analysis that are showing significant results?