The problem is there is no cure or vaccine. The only way to not spread it or get it is to isolate. Even then it will pop up again because of the asymptotic people.
The government measures are to ensure healthcare can be maintained to help people who need it. It’s also to reduce loss of lives indirect or direct.
Without herd immunity brought about by a vaccine or natural community spread, you are talking 12-18 months.
The government will be phasing measures in and out. The biggest risk is when we re enter the winter pressure in Nov.
The triggers for implementing measures are demand for icu beds.