Grabango, a startup known for its cashierless checkout technology, has closed due to difficulties in securing investment and scaling operations in a competitive and economically challenging market. Despite raising over $73 million and offering a flexible system for existing stores, Grabango couldn't overcome the pressures from established competitors like Amazon and broader economic conditions. Its closure impacts major retail clients and raises questions about the sustainability of cashierless technology, prompting a reevaluation of business models and strategies in the sector.