It just doesn't make sense to add more operating costs when your product is shipped online. But there's also the place it has in the community. From their Wiki

It just doesn't make sense to add more operating costs when your product is shipped online. But there's also the place it has in the community. From their Wikipedia article (so take it for what it's worth): "Surpassed only by the Diamond District in terms of Orthodox employment, the company is a vital part of the community's financial health, with hundreds of Orthodox Jews on staff." That doesn't scale either.