> Think about say, ordering food by searching by hand for every business within a given radius around you, going to their own website, looking at the offering, and entering your details. And then doing it differently the next time when you feel like eating something else.

This is exactly what I do, and it's completely fine. My desktop web browser can even save my credit card details (but I have mine memorized so I don't do that) and does save my address to make it just as easy as GrubHub or whatever. Three different restaurants have thanked me for using their website rather than the other services that they go through because it's cheaper to them.