I'm reading the Vox article. What I think will happen is that industries will restart, one after another, with some semi-permanent rules to manage person-to-person contact.
Beyond that, however, I think the CDC and NIH have conceded that this covid19 will remain at large, it will continue to circulate along with all the other flu-like viruses, and eventually most people will be exposed to it. Assuming the virus doesn't mutate too much for the worse, fewer than 10% of those infected will require some form of treatment or hospitalization, and fewer than 10% of those who need medical treatment will pass away. High-risk groups, such as the elderly or people with conditions such as diabetes, will need to continue to isolate themselves for their own protection. Hospitals will have to organize their resources longer term to manage infectious disease as a greater priority.
Even if the U.S. instituted the mobile-tracking solution that's being used in Singapore, there would be a huge shortfall in people agreeing to comply with it. As the Vox article's data indicates, many people would refuse to install the mobile app because they don't want the government tracking them and telling them they need to quarantine. They would prefer to just get infected and bear the consequences. The vast majority of them will feel some symptoms for a week or two, like the flu, and then they'll go on about their lives.
Even when a vaccine comes out, a significant number of people will refuse to take it, I'd imagine.
