Sikorsky's Loss
This was surprising to me.
Sikorsky invested heavily to bring the 300 and 333 engineering up to standard. In the process, after discovering discrepancies in Schweitzer's certification records, they essentially re-certified the 333M model internally via QAB. Significant FEA and military flight envelope testing was performed at their WPB, FL location. In the end, they were not able to complete a production build of either model, internally or through vendors, without incurring a significant loss. This was at the least a significant motivation for the sale.