Innovating technology wise in the restaurant space is pretty tough cause sooner or later you're going to hit the wall of having to integrate with a dozen or more point of sale providers, no matter what you're trying to do (mobile/online ordering, reservation/waitlist systems, reporting systems, etc).
Oh, and because of their incredibly low profit margins, most restaurants can't afford to buy this type of tech. And the ones that do typically keep it for 5+ years between upgrades.
The worst part is dealing across vendors though. The APIs are incredibly inconsistent between them, and some are frankly, crippled.
solves the problem of having access to seating data and provides a compelling upgrade option compared to alternatives. hardware just needs to be a "dumb" Internet terminal (likely with a touch screen and print capabilities).