That's a good start, but the cheap cost of burgers at fast-food stores (McD, Burger King, In-Out, Sonic, Taco Bell) will be a tough barrier to cross. I hadn't eaten at a fast food place in decades and one day was driving home from Orlando and was really thirsty. So I pulled into a Taco Bell (the only fast food stop on that stretch) to buy a diet drink...and decided to try a taco. The taco was actually cheaper than the drink! For the first time, I realize why so many families use this venue rather than making dinner at home: it's fast, it's cheap, the menu lets everyone choose, there's toys, Mom gets to actually sit down and eat with everyone else....and there's no cleanup.
At least for that moment in time. The resulting cleanup for the entire planet...that's another story.