This is all already explained previously in the thread. Evidence has nothing to do with it. Please catch up.
That's how justice works. Every case is 'possible' until the allegations are either proven or not. Each side pay their attorney fees. This decision won't stop these women from suing individually if the choose to and requiring Walmart to have to defend themselves. That said, Walmart does have a recourse to recoup the costs. For example, by countersuing for malicious prosecution, abuse of process, etc if they think the women's cases are frivolous.