Sweden's strategy is based on the good sense of its citizens. That's not going to work in America.
As Craig said upthread: 'I won't speak of other Nations but there is a real stubborn streak in many Americans and for lots of people here just said screw it, I'll do as I please.'
The Swedes aren't like that.
LOL, man. There is just as much good sense in the USA as in Sweden, and there are just as many reckless people in Sweden as in the USA. It is the same with any country.
Your country, England, had plenty of stories of people scoffing this, as did Canada.
At a certain point in time, you will need to just let go and trust your fellow citizens, like Sweden. Like I said, it is impossible to stay locked down until a vaccine is created, if it ever is. We will be playing Sweden sooner or later.