Why do convenience store that is open 24 hours have lock on their doors and relate it to economics?

Convenience stores that operate 24 hours often have locks on their doors to balance security and accessibility. While they aim to provide continuous service to customers, the locks help deter theft and vandalism during low-traffic hours, minimizing potential losses. From an economic perspective, this reflects the trade-off between maintaining open access for potential sales and ensuring the safety of assets, ultimately influencing the store's profitability and operational costs.