Because it's already easy to do this. The browser portal to your website is the easy thing to solve. * Network connectivity * Computers (& physical considerat

Because it's already easy to do this. The browser portal to your website is the easy thing to solve. * Network connectivity * Computers (& physical considerations: space and tables) * Web store Those are the hard things to implement, and would cost a business a fair chunk of money, even for a bare bones offering of those.