Look at how Square attacked the POS market. They didn't start by trying to replicate everything existing POS systems were doing. They started by appealing to s

Look at how Square attacked the POS market. They didn't start by trying to replicate everything existing POS systems were doing. They started by appealing to small shops who were not using full scale POS systems. It may appear now that OpenTable has a death grip on the market but it only takes a slight shift in ideology for opportunities to emerge.