DISADVANTAGES OF ECOMMERCE Any one, good or bad, can easily start a business. And there are many bad sites which eat up customers’ money. There is no guarantee of product quality. Mechanical failures can cause unpredictable effects on the total processes. As there is minimum chance of direct customer to company interactions, customer loyalty is always on a check. There are many hackers who look for opportunities, and thus an ecommerce site, service, payment gateways, all are always prone to attack.