Final answer:
The least likely reason for a product idea rejection is its potential lack of profit, as profit is a major incentive for product development. Rejections are usually due to factors like design issues, market infeasibility, or infrastructure needs.
Step-by-step explanation:
When the product idea committee of Foster Manufacturing Company reviews possible new products, several factors may lead to the rejection of an idea. However, one reason that is least likely to be a cause for rejection is the concept's potential lack of profit. This is because profitability is usually a key driver for pursuing a product idea and is not a reason for elimination, but rather a strategic concern to be addressed through business planning and market analysis. More common reasons for product idea rejection may include poor product design, inability to meet customer needs, nonviable economic scale, the necessity for infrastructure changes, or insufficient patent protection affecting the feasibility of the product.