I'm not sure the dozens upon dozens of small businesses I've seen with QR linked menus are doing more than barely passing a PDF (the one they use to print their

I'm not sure the dozens upon dozens of small businesses I've seen with QR linked menus are doing more than barely passing a PDF (the one they use to print their menus) or functional page that often isn't even designed for mobile are doing the vast majority of this sort of stuff. They're almost assuredly not doing any real sort of tracking, highly dynamic situational pricing, or forcing tip values. While it's certainly possible, I find it highly unlikely. Larger chains certainly could pull it off and likely do (e.g. the McDonalds of the world), but I also don't tend to eat at those places. Places I dine could not justify creating an app for their business. Maybe people's dining choices effect these perception a bit? Also I've yet to be anywhere that forces a tip without explicit clear gratuity information on the menus, usually related to party size. Tip culture is a whole other growing issue in that places have started introducing mandatory recovery fees and service fees instead of integrating costs into their menu prices (where they should be).