In the Context of Supports for New Businesses, Why Are

In the context of supports for new businesses, why are established businesses often hesitant to buy from a start-up business?

A) Because the supply structures of established businesses are resistant to incorporating new supply sources
B) Because small businesses are typically family-run establishments, making them unreliable in the long run
C) Because it is more profitable for established businesses to fulfill any requirements through resources already present within their organizational structures
D) Because it is not clear if the new business will be able to fulfill an order or service a product in the future