Pay-what-you-can is an interesting concept, and I'm seriously interested when someone uses their own money to try to make it work and show us the way. Seriously, wouldn't it be great if it worked? And maybe it could, under certain limited circumstances. But in this case, they tried and gave up.
Opening paragraph:
Panera Bread Co.’s pay-what-you-can concept, Panera Cares, will close its last location next week, as the company said the non-profit experiment is “no longer viable.”
Hmmm, that “no longer” phrase would seem to imply that it was once viable.