I don't understand it -- it is amazingly cheap (under $500/year, including hosting and support) and simple to get a great looking online store using a website b

I don't understand it -- it is amazingly cheap (under $500/year, including hosting and support) and simple to get a great looking online store using a website builder app, including payments (OK, maybe not delivery pickup times, those would still have to go over the phone). I can see a mom & pop store having some trouble doing that (but even they probably know a high schooler who could do it in a day). I wouldn't expect a serious fine dining restaurant to have trouble with something that basic, especially when takeout just became their only business.