"It'd be a strange thing to pitch to investors too."
I think there is something here actually.
For example it's a constant annoyance to me that when I get chinese food or sushi from the same places on a regular basis I actually have to make a phone call and talk to someone. At one place where they know me they actually make me give them my phone number which allows them to pull me up in their system. Just having to recite my phone number annoys me to no end.
I am sure there are obviously people who have solved the problem of using a smartphone or a simple web interface to help order pickup food (or delivery). But they haven't made any headway in the major city suburb where I am located.
For the life of me I don't understand why someone doesn't create a "bingo card creator" [1] type business to serve this market at a reasonable monthly fee. Most ideas on HN are "start by getting funded or incubated" as opposed to things that actually could be sold, proven, and then scaled. Write the app then knock on some doors and sell it (after giving it away to test restaurants for free).
[1] http://www.bingocardcreator.com/
https://news.ycombinator.com/user?id=patio11
Sometimes called on HN "lifestyle" business.