Given the aggressive approach so far by the NFL, I now believe they will carry on with the season no matter what

The best case is a delay but every day another state or local government is telling their residents to stay home and as @guillermo stated it won't be their call. The NBA (another billionaire's club) is desperately trying to figure out a way to continue their season but it will probably be canceled, and MLB may follow suit soon. The NFL is the big dog but all big businesses are hurting.