There might be some space in trying to tailor an out-of-the-box frontend framework to restaurant ordering. But honestly you might get out-competed by wix/wordp

There might be some space in trying to tailor an out-of-the-box frontend framework to restaurant ordering. But honestly you might get out-competed by wix/wordpress/whatever if they ever invested a pretty trivial amount of effort into targeting you - it'd be a thin thin margin to walk.