You don't have the WSC story quite right.
It had been an AM, that brought an FM in for a simulcast.
Later, the "WSC" brand stayed with the FM, while the AM went progressive. That experiment failed, and that AM has since left the Talk format entirely.
The FM - and therefore WSC, as it was maintained - never went progressive, never abandoned conservative-leaning talk.
There had just been the vision that a progressive station might succeed, thus giving them more inventory to sell and more money to make. Had the format worked, the revenue stream would be larger (yet overhead would be up minimally). But, like many places, it didn't.