I used to live in the southern-most part of New Jersey, just across the bridge from the state of Delaware. The people of that area had an interesting shopping habit, when they needed big ticket items or planned a large run for back-to-school or Christmas, they drove over the bridge to shop. Why? Because there’s no sales tax in Delaware. That meant huge savings for consumers but a loss of business for local New Jersey stores.
The internet is like Delaware. Mostly, you can shop tax free if you buy online. That means that large sites like Amazon can undercut prices even more than a brick and mortar store, which led to the demise of chains such as Borders Books and many mom and pop locations.