It’s not going to go away regardless of the measures constantly being put in place so in my opinion if you’re at risk you should be keeping yourself in isolation as much as is feasibly possible, something that my parents have done. Carers need to be tested everyday and if positive kept away.
Again I know it’s not popular but closing businesses, ruining the economy will have a greater impact in the long term.
As for not locking up currently, tell that to those students who are currently stuck in their halls of residence.