It's not about stopping, it's about containment and slowing down the infection rate while we expand testing and develop a vaccine. Just trying to buy time. The last thing you want is to have a collapsing healthcare system because everybody is panicked every time they have a cough.
Frankly, the US is ill equipped to deal with a plan like that. Not because the tech is lacking, but because it's all about the money. While your average ST poster making 7 figures can certainly self-quarantine for 14+ days, your average worker isn't getting that benefit.