A pilot program for drone-delivered footwear reveals that while customers like the idea of this...

Viability is the criterion that is not being met by the pilot program for drone-delivered footwear. Viability refers to how profitable or sustainable a product or service is, given the market demand and cost structure. It can be measured by comparing the revenue and expenses of the product or service, and assessing the return on investment or break-even point.References:https://trailhead.salesforce.com/en/content/learn/modules/salesforce-strategy-designer-certification-prep/create-a-business-model-canvas