Seriously though, there are people who will gladly eat pizza every day. Just because you don't like it (or maybe you just don't have any quality pizza restaurants nearby), doesn't mean it's a bad idea.
I'm personally kind of peeved that it is nearly impossible these days to buy some things (eg. bags of tortilla chips) that aren't comically super-sized, because I know if I buy the big bag and they are just sitting in the kitchen I'm likely to overeat them, so I just end up not buying them at all.
But if it's the former then you have me intrigued. How does the size of the bag affect your perception?
But assuming you're right: eating an entire non-supersized bag is almost as bad as eating an entire supersized bag. The solution is not a moderately-less-bad splurge size, it's putting the bag away.
Which is the common case in my experience. Once every few weeks or so I'll be food shopping and think, you know what I really want now, chips! And then I'll buy a bag, take it home, eat it and then not buy chips for another few weeks. So the smaller the bag, the less chips I eat.
You're proposal works on the assumption that human willpower is constant and infinite.
Focus on the main point, that it's still quite bad to eat an entire non-supersized bag. If the original wish of 'no supersized bags' was granted, no problem would be solved! There would be even more chip overeating on georgemcbay's part, as they bought more bags.
It's like comparing 22 inch and 30 inch pizzas, nobody should be eating an entire pizza that big over the course of a couple days.
The hot food example I agree with - small portions are economically punished except with very quality food (which is expensive anyway).
http://www.npr.org/blogs/money/2014/02/26/282547399/one-reas...