They will, but will it be bad? While everyone is focusing on federal govt action or inaction, I think at the individual level, pretty much everyone has the message. All sports events are cancelled, as well as concerts, church services, any mass gathering. Business has quickly adapted, allowing those who can, work from home. Business meetings have been cancelled, with videoconferencing being used instead. Schools are closing - our schools for my kids are doing online learning. People are practicing social distancing. I guarantee if anyone goes out into public with as much of a cough or sniffle they will get the shunning treatment if not several people telling them to get a clue. You don't get 300 people lineups at grocery stores without a mass realization that the situation has changed.
So I'm left wondering if the worst part of the virus effects will be blunted in the US.