Underscoring changing attitudes toward food delivery businesses, Just Eat is exploring ways to offload Grubhub about two years after paying $7.3 billion to acquire it. The industry’s outlook has soured as pandemic restrictions have been lifted and demand for restaurant delivery has fallen. Labor shortages and increased government regulation have added new costs. In a recent research report, analysts at Berenberg Bank estimated that Grubhub would fetch less than $1 billion in a sale.