Why we cook at home rule

I wonder how much of this is the fault of food delivery apps. I've heard multiple people who run a small restaurant or food cart complaining that those apps as part of their terms/contract wouldn't let you price up your menu items in-app to cover the % cut they take. during pandemic when app orders become the majority of your business, it makes sense to price up the items to include uber's cut across the board and just incorporate it into your cost model.