Google Wallet is the first mobile payments service to really show promise in adding capabilities like the above on top of a base payment platform by bringing their ecosystem of local services like Google Places and Offers into the fold.
With over 26, 000 restaurants in North America on the OpenTable platform and an installed base of equipment in each, not only is it a hassle for restaurants to decamp from the service, but also it would be very challenging for the next OpenTable to successfully enter the marketplace.