I think there is a diminish of return on such foods. Fries are now pimped with bacon, cheese and all kinds of stuff. Sweet itmes are so over sweatened that if you eat a strawberry afterwards it tastes bland.

If we reduced the sweatiness of items we could enjoy them just as much as our senses adapt quite quickly. If I stop sugar for just 2 days and then eat something somewhat sweet it tastes very sweat.

It's a big issue with the food industry trying to outsweet each other because people are so used to the taste of sugar. Artificial sweeteners are also to blame for setting a hight expectation of sweetness in products.

Potatoes produce the highest level of satiety compared to other carbs. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6267283/ Combined with fats via frying or baking, and it's not a joke that they would make you feel the most full compared to a similar amount of rice or refined wheat bread/pasta.

A slightly healthier but equally delicious replacement for fries are oven-roasted or grilled duck fat potatoes with the skin on.