I don't really understand what has changed since the restrictions went in place such that NOW we can reopen things safely? We don't have a vaccine... is our testing infrastructure beefed up enough to identify and contain outbreaks now? Certainly there's been a cultural shift, so perhaps folks will be more careful and keep the spread down regardless?
I think you might call 20-million-plus unemployment a "cultural shift." That's what changed.
Then there's the fact we've already been doing this for a month or more (location-dependent), and we can't do it forever. So there was a chronological change.
Plus we seem to have dodged the overcrowded hospital problem, so that changed.
And then you have just way too many examples of over-reach from government, and hypocrisy from the elite Fredos, which sours people on the whole idea.
And in those places where government isn't enforcing heavy-handed quarantine policies, everyone's going out to Home Depot, or having private get-togethers anyway, so why bother?