Businesses are coming back but through the new normal. But for those countries like New Zealand and Taiwan, there's nothing have changed. They've been back in their normal lives or at least they didn't tackled much with covid19.
These are few countries that you have mentioned that didn't feel much challenge with covid-19 and also some African countries didn't fall much in the pandemic but apart from that, it was a very big issue to most countries and they are just coming back from it, trying to rebuild their losses.
They are good and putting precautions very early.
Yes, I forgot African countries that dealt with covid19 easily. Experts say that it's because of the weather but IIRC, it's that they have some herb that are naturally helping the people's body to fight covid19.