The whole strategy (well, the one in use at present - not the one they started out with), is to spread out the number of people getting this virus at any one time, so that those that require medical health, will have more of a chance of obtaining this.
There is no way, at present, of stopping this virus from affecting the larger proportion of the population, it is a very high infection rate virus (fortunately, a small percentage of morbitity).
Do think too many people are under the illusion that when lock-down end, they will come out slowly, and be safe. Not the case.....people leaving isolation are going to be just as likely to get the virus as they ever were. Hopefully, by then there will be medical space and facilities to treat those who will need it. On the other hand, the majority of people catching this virus do not require any sort of medical help, and recover within a week or two themselves.
Until such time as a vaccine is in place, this virus is going to be around, whatever we do.
Sweden started off with a far greater ability to cope with those who would require medical intervention, they had not had a decade of severe cut-backs to their social and medical services.
Yes, it will be very interesting to see if they - who alone are trying a different method - have a much higher death rate than the other countries who went into lockdown. Obviously, they will be the only country who is likely to come out of this without severe austerity, unemployment and recession