It's tragic that only the threat of a deadly disease could compel such a change, but perhaps we may find other levers to help us achieve such widespread beneficial changes in the future?
A total shutdown of the entire world economy on an unprecedented scale still doesn't track enough to prevent climate change.
If that isn't a clear indicator of how severe the situation is then I don't know what else is.
GDP has barely taken a hit the world over. Trade is virtually unchanged. Hell, some indicators went positive though the pandemic.
I don't really think there was a "shutdown". Passenger car miles might have gone down, but I suspect deliveries and cargo went way up.