But then you encounter the problem whereby not everywhere in the country is the same.
Down here it almost never snows and when it does, it's a pathetic light dusting that causes no real trouble to anyone. The rest of the time its dry and cold most of the time, or a bit of rain. So far this winter despite temperatures of -4 I've had no issues at all on my ContiSport Contacts - no real lack of grip, there has been no traffic choas, nothing. Some of the very minor roads have been a tad icy, so you take it easy, and the usual roads are just fine.
Everyones life just continues normally. Most people down here would stare at you as if you are an alien if you suggested they moved to winter tyres because they are simply not required here.
That and many people can't even afford to buy decent summer tyres let alone decent winter tyres, so if you did make it a legal requirement you'd get loads of people fitting Wan Li winter tyres which I guarantee are noticeably worse when it isnt snowing than a half decent premium tyre.
Again we find ourselves in the midst of hugely unusual weather that is not the norm for our climate. Is our climate shifting? Nobody knows - but for now, this weather is atypical. Even Europe is having problems - airports closed in areas of Germany surely used to this sort of weather, people actually DYING in Poland, etc etc.
This isn't usual winter weather. This is something else.