40 million can go out and work. What about other 290 million? They would get infected with COVID-19 on purpose in order to acquire antibodies they need in order to work again.
The other step is they want readily available virus testing (antigen) on demand. If you test negative for the virus, OR positive for the antiBODY, then you can circulate.
There will be more breakouts. That’s why they want the “contact tracing” to be in place, too. That’s scary from a civil liberties perspective, I know, but makes sense from a virus perspective.