the time. If Cosby ever gets prosecuted (I don't know what the statute of limitations is on rape/sex assault charges in the various jurisdictions in which they appear to have happened) then he'll have the best legal defense team out there, making acquittal more likely, no matter what the facts are.
At some point, the testimony of victim after victim becomes overwhelming. Some of these women at be making things up, sure. But the sheer number of women who've come out about this (and whose stories are seem very believable) coupled with Cosby's reaction when asked about the allegations are pretty damning.