One of the most important things that they could do would be to train their employees not to descend like a pack of ravenous jackals on every customer that walk

One of the most important things that they could do would be to train their employees not to descend like a pack of ravenous jackals on every customer that walks in, not to follow the customers around and make them feel like they're about to get mugged, and not to harass them with irrelevant sales pitches when they're trying to checkout. They've driven away a lot of customers by treating them like prey.