I'm just gonna say it: the chances of having a vaccine for Covid-19 are about the same as discovering bigfoot. The fact that we've been through thousands of years of evolution and research and still haven't been able to find a cure for the common cold, which is caused by the same family of viruses as Covid-19, should give pause.
If scientists admit that it will take decades to get a vaccine for Covid-19, and therefore have to live under economic lockdown for generations, nobody will trust or listen to them anymore.
I think every business big or small currently closed because of the pandemic should just file for bankruptcy because they're probably doomed to die anyway.